[thensome]

I really think you're wrong about this not being controversial. Yes, a lot of people will want it, but there will definitely be ethical objections, medical objections, social issues, etc. for anyone using a drug to increase height.

Aside from that, the amount of people who are willing to take the side effects of growing is not going to be that large. I think most short cisgender men aren't actually insecure enough about it to take medication for their height. Then you're going to have to develop therapy to make sure that people are able to deal with the psychological aspect of continuing to feel insecure despite improvements in appearance, like they do with extreme weight loss or plastic surgery.

If someone did successfully create a product to increase height, it would create a lot of people who realize they are insecure about everything else after they get taller lol