Exactly. Business isn't a no-holds-barred anything goes anarchy. It's not because we have some free trade that there are no rules what so ever.

Abusing a stranglehold or monopoly will eventually draw the ire of regulators. Just ask Microsoft or the EU.

What is and isn't OK is something that will probably be decided in court. I hope this kind of anti-competitive measures do get some kind of regulation in the app-stores/ecosystems space that large mobile players have crafted over the past few years, because they could easily stiffle competition from their current dominant positions.