If they’re better, you don’t need mandates.
And some of the issues for EVs, like availability of chargers, go away by automatic action of the market when there's a good reason (e.g. government mandate for more EVs) to expect more demand for EVs.
* except on the occasions where the rollover boosted the expected value above the ticket price, but this would never happen if nobody ever played lotteries.
Better and cheaper does win.