Humans can already live underground here on eatth

You’re focusing on the above gum situation and not the underneath. Having a tooth that could grow and fill a void where an implant would not be successful is huge.

And was that the case since it first went on sale?

They’ve significantly overcharged for their products for the past 20 years. If you can’t get people to give a fuck about the bottom line, good luck getting them to care about anything else