the point is, if your economic model cannot survive / adapt to the environment it is living in, is it viable? Cuba froze itself in time decades ago, is it just the embargoes? Why do they need capitalist trade to go a single step forward?
It’s the combination of the Castro family leeching off everything that they can plus the Floridians who are still salty about losing their rum factories etc who force the embargo - so it’s both being blocked by a major superpower and having an utterly corrupt government