We cannot really blame the exchanges for being limited to some countries. One of the reason why exchanges have limited or no access to other countries is because of the government itself. The policies of the government and their regulations are sometimes very hard on exchanges and sometimes they will ban it in their area. Such as binance cannot be accessed in the US because of the economic war between US and China. Also exchanges are also business and their biases is not just for themselves but also to protect their investors and users.
I dont think making use of exchanges is as difficult as we think, the one that many people want which would have proved kind of difficult is the binance exchange and they have already created a separate platform for them which is being recognized by the united states citizen and I think that there are still some other exchanges like Coinbase and kucoin which the united states citizens are using which I think is okay once these ones are available to them.
There will always be challenges everywhere, but this challenge is not enough for us to really quit the crypto sphere, if we quit the crypto sphere, it would still not change the level of things, there are people that will still be coping with the system and making money while we may just be busy looking at the problem available.