There is no incentive for AWS to add restrictions like Apple with XCode. Indeed, I think that this would just reduce the amount of the customers they can reach.
I don’t think that other computers manufacturers are going to follow Apple’s lead. Maybe Microsoft will do it if they decide to get serious with their Surface line.
The one company I see benefiting the most from this is Qualcomm. They have the customers and the money to invest in R&D.