In the US, if you're perfectly productive, legal, highly qualified and well-behaved member of society on H1B from China or India it might still take you 10-15 y

In the US, if you're perfectly productive, legal, highly qualified and well-behaved member of society on H1B from China or India it might still take you 10-15 years to become a resident, so the situation isn't totally rosy here either. And you certainly won't have the right to work on your own idea while you're on that visa, so that's a long time to wait before you can even get started. Probably explains why so many people will try to game the system and claim to belong to the O-1 category.