Pretty easily, actually. Socialist states don’t exist in a vacuum, they need money for trade and resources like every one else. This reality is why all actual socialist ideologies are globalist in ambition btw. It doesn’t do your socialized industry any good if you have to buy your materials from a slave mine.
Ideology alone won’t buy Cuba medicine, or industrial tools. The fact is that the hemisphere they’re in is dominated by America and capitalism is something you either work around or starve under.
It’d be nice if Cuba could have afforded to build the resorts as worker co-ops or whatever but it’s an economic miracle that they exist as a nation at all with the eternal enmity of America trying to choke them to death for seventy years.
Only a delusional purist won’t acknowledge that it takes money and resources to build things, and all the foreign investors want a, you know, investment. Socialism is almost always considered a goal to transition to, and not an absolute requirement to be enacted day one.
Unless you want to live on an anarcho-primitavist farm somewhere anyways, and, honestly, they’re the ones most likely to survive this coming collapse so I guess they’ll either get the last laugh or die to the raiders like everyone else.