The notion of designing a stable regulatory regime upfront is a mirage. It's how you get these giant corporations that pay no tax thanks to their double Irishes and have "independent contractors" instead of employees so they can avoid paying their social responsibilities.

The legal/regulatory regime should be reasonable and predictable, but that should mean human judgement rather than blindly following coded rules like a smart contract. If you're a corporation that's large enough to be impacting society, you should expect society to have a say in what you're doing, and that means that as you do new and surprising things, there will be corresponding regulatory changes.