It may make no difference what manufacturers decide to do if governments force the issue. It may not mean the end of ICE cars being produced, but depending on where you live you may not be able to buy one.
That said, EVs can be the go to consumer choice if circumstances align, in Norway over 80% of new car sales were EVs in 2023, with the market share growth having been helped by the use of incentives (such as lower or zero charges for tolls/ferries) and cheap hydroelectric electricity.
In the UK it is very likely we are about to switch to a Labour government next month. In the Labour manifesto that has been released today they have stated that they will restore the 2030 ban on cars with ICE, it's not a major policy point just mentioned, almost in passing, as part of a wider topic (there's no detail but the phase out was originally 2030 for ICE only and 2035 for hybrid, so this could mean a return to this rather than full 2030 ban, but not clear). If this does go ahead then the UK government will be pushing in the opposite direction to manufacturers.