[fungoking]

Global economy. Countries all over the world COULD invest, trade, outsource jobs to Cuba no matter the embargo.
This doesn't happen much because the Cuban government makes it difficult to make $ and if a company succeeds the regime is crooked enough to steal the business.

[driftless2]

"This doesn't happen much because the Cuban government makes it difficult to make $"

Investing money in a communist country would be like trying to grow oranges at the north pole.