This can be debated ad infinitum.
However, examining the historical example/ business created opinion/ Pepsi & Kentucky fried chicken fell the USSR not, Ray gun and massive defense spending.
If Cuba becomes a US ‘allowed’ vacation spot the current government / political climate will change within 3 years. The all mighty Dollar will do for Democracy, what 10000 years of isolation and white hooded isolationist policy cannot.
Unfortunately, it seems the only thing politicians and bureaucrats learn from history is NOTHING!!!