"That's assuming, of course, that the Cuban government would even allow outside investment and property acquisition on that scale- which seems doubtful"
There are Canadian, German, and Italian resorts there and have been for 25 years. Perhaps the land is leased (likely), but the development is there.
As far as the US being instrumental in preventing Cuba from accessing goods and services for at least 40 years, well of course they were. The US had (albeit in significant decline) substantial negotiation power over the other democracies early one and encouraged other economies to stick Cuba in the corner. Nose to the wall.
The nationalization of land in Cuba is interesting, and clearly a reaction to the US backing Batista only to protect their monopolistic investments dating back to the early 1800's (by 1877, the US controlled over 90% of Cuban exports). My goodness, the US was involved in military control of the island after acknowledging its independence! Say what? Then the Teller Ammendment that no Cuban would want and no cuban agreed too. That is funny stuff there.
Cuba was never completely Communist. It, like the USSR cherry picked what it wanted, ruled by a egomaniac. To penalize the people of Cuba because of what Castro did 50 plus years ago is getting old, don't you think? The US government got spanked by Castro and then took it out on the Cubans. Kind of like a time out. Times up.
So what is it? The human rights violations or the purported $6 billion in financial assets ($6 billion my azz) still owed the US that continues to drive the embargo?