WI: Chile continues to be a military dictatorship past 1990.

As we all know, Augusto Pinochet launched a coup in Chile in 1973 and led a US-backed military junta from 1973 to 1990 when it retransitioned into a Democracy.

I'm obviously not super informed on South American history, but is there any way that Chile could have continued to be a military dictatorship, past 1990?

If so, what would have happened if Chile never transitioned back to democracy?
 
Keeping military dictatorship is pretty difficult. Junta supported restoring of democracy on some point. So you should change their minds firstly. And even then keeping of dictatorship would be difficult. There would be internal and external pressure for this. Probably Chile would be quiet isolated, corrupt and poor nation.
 
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