Governance 101. Unless you want to start a war to oust them, you have to talk to them and take the long view that you can influence them to change. Embargo's, ignoring them, are short sighted feel good red meat tokens for the home crowd tough guys. Changes nothing. That said. Cuba is now changing and moving away from hard core communism, like China but not as fast. But with the end of the US embargo, likely much more quickly. You want in on some of that capitalist action which will benefit all Cubans? Then get in and start talking to them. That's why.