And these delays will preserve the solvency of the combustion engine manufacturers, how, exactly?
Once an industry has obviously joined the ranks of the buggy whip manufacturers, capital crowds the exits and the remaining players end up running down under court administration to discharge as much as possible of their debts. Of course, a lot of these firms are subsidiaries of automakers that will be enjoying the sales boom of the century as people replace their gas gusslers with electron ditto*, so the wind down should be somewhat more graceful than usual.

*and then sales will completely crash and burn 5 years later when the world catches on that electric engines last more or less forever