None of those things should be illegal. It is really annoying to see how a leader class kills people of hunger and make everything illegal so that now everyone is a criminal for trying to survive.
What I've seen is this: Those who have access to tourists or to the government are rich. Corruption is rampant as I've seen people bribing police right at the airport to have their things sorted out.
The mainstream corruption in society revolves around casa particulars and taxis. Essentially, you have right to rent a room and you have right to ride a taxi but there are strict limits on how much you can do it. So what more entrepreneurial people do? Simply distribute the business ownership to their friends and relatives on paper and keep growing and running their enterprises.
Also, there are two different types of shops and businesses: Locals only shops, locals only restaurants, locals only buses that are at very poor quality and I believe they are free or heavily subsidised and there are better quality versions that have prices similar to the European countries(prices way beyond a person with a salary can afford). So who do you think eats at these expensive restaurants? Yes, tourists - but also people who have access to tourists and people who work for the government.
One day a wandered around my casa particular in Havana and ended up in a place with very nice houses quite close to governmental buildings. I took some photos, enjoyed the place and ate at a restaurant. Then I noticed that the restaurant got very busy with military personel and well dressed people. Those were definitely not tourists, those were people from the nearby governmental buildings having a dinner after work.
Very interesting experience overall. Almost completely positive, full of life lessons about so many things including classes in the society where they are not supposed to exists. I'm also convinced that consumerism is not the only way to a happy life and abundance and excess are not necessarily the answer. The first week was hard, the second week I was completely happy to have only 2 options for beer and 1 option for chocolate.
I also went to local restaurants, they were extremely cheap but way too basic IMHO(However I think there was a special kind of a restaurant that is intended to be fancy but also for the locals. I was having a proper fish meal and a beer for about equivalent of 5$ in CUP at one of those). However I was told that I can't take any other bus than Viazul(the fancy tourist buses) for travelling between cities. Not that I would want to travel in one of those anyway, definitely not comfortable or safe to travel.
Here is one of the buses that the regular Cubans were traveling: https://imgur.com/a/jIynZMZ
For some reason, communists suck at automobile making.
OH! By the way, apparently CUC was discontinued a year ago in 1st of January 2021.[0]
Do you not think that embargoes have some degree of impact on this?
Now, you can argue they were a joint-venture with Fiat and not an entirely original idea (though the Soviets made improvements in ruggedness and ease of self-service), but whatever: cars made by the Soviets didn't suck.
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[1] from Wikipedia:
> The rugged Lada was popular in Europe, Canada and South America for customers looking for more affordable alternatives to local brands, and sales of the new cars were extremely successful, reaching as far as New Zealand. In the West, their construction was frequently described as cheap and that inspired jokes at the car's expense; nonetheless, Lada "gained a reputation as a maker of solid, unpretentious and reliable cars for motorists who wanted to drive on a budget."
Wikipedia uses as reference Andy Thompson. Cars of the Soviet Union, Haynes Publishing, 2008.
They are terrible cars. Some of their aspects, like being very basic is considered a plus by some people and that's about the only positive thing that can be said about these cars. The affordability for the Westerners came from the income difference, these cars were not affordable for for the locals as they had to save money for years to buy one.
Very bad, very unreliable, very inefficient, very uncomfortable cars can be popular only when they are extremely cheep or the only option.