I think it would be ok for Apple to create apps that fill a particular, yet to be explored niche, or to create foundational quality and functionality standard f

I think it would be ok for Apple to create apps that fill a particular, yet to be explored niche, or to create foundational quality and functionality standard for a given area. Sort of 'Apple-basics'. However it is very anti competitive, and monopolistic to target mid/upper tier product segments, against your market participants. It would be like NASDAQ running their own brokerage business.