It wasn't our goverment. Allende won by parlamentary tricks (not by popular vote) and had very poor support during the entirety of his govement.

Allende wanted Cyberdyne as a way to bypass the informal, distributed signaling networks of the economy that mediated supply and pricing, which were by definition managed by those owning the means of production. In the end, though, Cyberdyne's only significant success was circumventing worker strikes--truckers, specifically--protesting Allende's mismanagement of the economy. (And like with Trump, blaming opposition and protesters for sabotaging your reform plans is a cheap excuse.)

And the CIA never overthrew Allende. Chile was never a banana republic. The myth the CIA held the strings is just an American conceit. IIRC, Allende's overthrow was orchestrated by the Chilean Senate, where Allende supporters only nominally held power, and only until Allende's expropriations became intolerable to moderates.

The truth is that for better or worse, Chile was too conservative for both Allende and socialism. It's like the U.S. that way--a relatively conservative society where liberal factions only enjoy sporadic (albeit crucial) successes.