As we have seen with Apple, most companies try to establish a virtual monopoly for their product lines. They hope that they can kill off or significantly delay the competition. It is natural for the original developers to want to keep their lead as long as possible.
However, they are only playing for time. Competitors will emerge if the product idea is lucritive enough and people do not mind buying copies.
Protectionism is an old game, been happening for millenia. I do not expect that to change. The best protectionism is to give the consumer a good product at a good price and back it up with excellent customer service. People will remain loyal and pay up for that option. Otherwise, its just a cost shoot out and you will eventually lose.
Just my opinion.
Just a follow-up note. The US House intelligence subcommittee just declared war on Chinese companies Hauwei and ZTE. As if the threat of losing access to the Chinese market were not enough, the US government throws gas on the fire.