Unfortunately the notions of "left" and "right" today are obscured by cultural and historic definitions, as the left and right "wings" harken back to the national assembly during the period of the French Revolution. The two-dimensional "political spectrum" only muddies these concepts as, in practice, separating economic and social liberty (or control) is near impossible. People tend to form political associations based on broad ideological beliefs (e.g. freedom vs control) or by more empirical or granular issues (e.g. tax rates, abortion, gun control, regulation, etc), none of which are easily placed in a single quadrant.
Assuming the "far left" and "far right," meaning the commonly understood totalitarian ideologies of communism and fascism, don't come close to "meeting" presents a false choice, with the "moderate" position simply being placed between the two. Communism (or in practice, socialism) and fascism have more in common than most realize as they are both collectivist ideologies that subordinate the individual to the group, whose locus of control is by default the state. Unlike classical liberalism, neither recognizes the sanctity of the individual, and their rights, if any, are merely utilitarian and subject to the whims of the state and the party. The term "fascism" has latin roots, symbolically as a bundle of sticks fastened together (symbolizing the strength of the group under the leader). The ideological origins of fascism in Italy, first authored by Giovanni Gentile and practiced by Mussolini, were actually socialist in character.
https://fee.org/articles/theres-no-denying-the-socialist-roots-of-fascism/
Gentile was influenced not only by Karl Marx, the father of authoritarian socialism, but also Hegel, who was essentially the ideological grandfather of authoritarian socialism (Marx's main man), having developed the notions of dialectical historicism and German idealism (awful!). His convoluted philosophy ultimately boils down to nothing more than nineteenth century alchemy that influenced a number of terrible ideas and regimes.
While many historical and contemporary advocates of socialism have decried any common ideological roots or practical similarities between socialism/communism and fascism/nazism, these splinters are regular features in their ideologies. For example, the infighting between Bolsheviks & Mensheviks during the Russian Revolution, the left-opposition against the Stalinist "right," the purging of party members following Lenin's death (and Trotsky's ultimate demise by icepick to the skull) under Stalin, the Night of the Long Knives (Nazi "socialist workers party" members killed by Hitler), and so on. These ideological "splits" demonstrate that just because one faction is opposed to the other, they are not polar opposites but merely dissenting factions.
Practically speaking, both Nazism/fascism and socialism/communism as political and economic systems concentrate power under the state. Both are opposed to free market capitalism, private property rights, and individual liberty. Its well understood that both systems restrict or eliminate civil liberties and clamp down on dissent, freedom of speech/expression, privacy, etc. What's more telling is the similarity in their economic systems. Many socialist ideologies propose that the means of production will be owned by "the workers" which, due to its absurdity, gives rise to the state ownership of production, i.e. a centrally planned, state-run economy that eliminates market and price signals and private property rights. Fascism and nazism likewise take control of existing private enterprises, eliminate or restrict property rights, and establish wage and price controls under state mandates.
https://www.econlib.org/library/Enc/Fascism.html
Here's an even better example. Look at the proposed economic policies of a Bernie Sanders (Democratic Socialist) or an Elizabeth Warren (Progressive Dem) type and compare them to Fascist Italy...
https://en.wikipedia.org/wiki/Economy_of_Fascist_Italy
I'm sure none of us favor a political or economic system that is "far left" (communist) or "far right (fascist)" but given this dichotomy would likely describe ourselves as "moderate." But placing oneself in between fascism and communism is...absurd. If one were to ask your political beliefs, would you say "Well, I'm somewhere between Stalin and Hitler"? That...doesn't sound right. If we look at the ideologies and history of these regimes, it becomes obvious that liberal, free-market capitalism (what we nominally have in the West) is not in between the far left and far right, but rather completely separate and opposed to either system. If anything, fascism is between free market capitalism and communism.