The whole point is to register security tokens with the stock market regulators.
Then you might ask "if it is going to be like registered shares on the stock market, then why bother with security tokens?"
I will be honest, security tokens will require a lot more paperwork than unregistered tokens, but they also have features regular shares lack, such as being able to program them and, with DUSK, private transactions.
The belief of the crypto markets can be a good answer in this matter.
If company believe crypto market more than regular markets, he would choose crypto markets.
Sure, when crypto was the playground of cypherpunks with a vision of a post-bank world. Then people who were only in it for the money started flooding in. Crypto has lost its innocence - and I say this while being aware of Silk Road.
The cat is out of the bag. Now what?