Ever-more-restrictive government regulations are what allows these OEMs to ‘leverage’ their market power this way. I am not sure that a new regulation can solve it, as these sorts of mandates don’t seem to have worked in any other market.
You're right, the solution is getting rid of swathes of intellectual property legislation, not adding more.
Remember that those regulations are written by the OEMs they benefit and whom bribe legislators to pass those regulations.
Any argument made without acknowledging this is purely in bad faith. The problem is not regulation that benefits OEMs. The problem is that you can simply purchase regulations that benefit you.
The argument isn't 'more' regulations or 'less' regulations, it is the right regulations. The problem is that big companies slowly allow regulations that don't hurt them but do block competition by aggressively fighting regulations that help the startup (their competition) or help the consumer in ways that make them less money. It isn't hard to be evil and create regulatory capture. You don't actually have to be active in crafting regulation, just be active in blocking the right regulation. General statements that are 'against regulation' play into big companies making things worse.