As long as selling ASIC's are profitable -> more R&D and eventually everyone has access to the most capable ASIC's.

Off the top of my head, data from 2 years back(things might have changed now). Bitmain, one of the top 3 mining pools, 90% of their revenue was from ASIC sales rather than mining.

As long as Bitmain has competitors, they should always be able to put out the best ASIC's to the public.