I can think of an easy model. Disallow collection of personal information. Pull the rug out from under "services" which are really just data collection fronts turning a profit from selling your data instead of the primary service/good for money transaction.

23andMe could still have operated legally under this scheme. They could have done the analysis and sent you a printed sheet. But no, they had to store everything to be able to double dip by selling the data to pharma companies and whoever else would pay for it.

If you can't turn a profit without underhandedly selling your users' data. You deserve to fail.