I think paid oncall could work if oncall is voluntary. The more oncall sucks, the less likely team members are to volunteer because the pay isn't worth it, then the company/team needs to pay more as an incentive to get people to volunteer for oncall. Eventually the price is so high that it becomes cheaper to just build the system correctly and stop shoehorning features in with no regard for stability.

If oncall burden is light, then everyone volunteers because it is an easy way to make a bit of money.

However, it is a huge systemic change to move towards a voluntary model. Not sure how feasible this really is.