Because if you do that, there's no point having an ICO. Just do an IPO - the token is an expensive, pointless distraction from their mission to democratize the world's dogsitters, or whatever they want to do.

A token is virtually frictionless and costs nothing to setup or trade globally, dividends can be paid out directly to token owners.

An IPO is an incredibly lengthy, arduous process requiring a small army of lawyers and accountants simply to offer shares to a restricted subset of sophisticated investors in one country.