If inference is A) expensive and B) has enough predicted demand to build a ton of datacenters, why is AI stuff being shoved everywhere, without an obvious profi

If inference is A) expensive and B) has enough predicted demand to build a ton of datacenters, why is AI stuff being shoved everywhere, without an obvious profit motive, in a way that people hate? AI results in search boxes, apple mail summaries, that sora video app, AI image gen that very few people would use if it wasnt free.