Many governments have announced that by 2040 it'll be illegal to sell cars with such engines.
They certainly won't be dominating in 22 years.
The question is not "is this business going to be dead" but "when this business will be dead".
So it's more like telling MicroPro to to stop investing in their cash cow DOS-based WordStar and port that app to Windows, because the writing is on the wall.
MicrPro and many other companies were a bit asleep at the wheel during DOS -> Windows transition and that's why there's no MicroPro anymore and there's no WordStar anymore.
Transition to electric motors will take a bit longer but the window to become a significant player in new technology is not infinite.