In general the ICE car market is not just car manufacturers but many thousands of companies all over the place that make parts and components. Quite a few of those are becoming redundant and quite a few more are facing stiff competition from abroad. Anything to do with components for petrol or diesel engines is going to face year on year declines.
What's currently happening in the market is price parity before incentives, before considering benefits from lower maintenance, and before considering benefits from lower energy cost. An EV is simply becoming the cheaper vehicle to buy. And with all that included, EVs are far cheaper overall. That's not a trend that's ever going to revert. It's only going to get worse and it's going to have some obvious effects.
A lot of this applies to US car manufacturers as well BTW. The current tariffs are distorting the market dynamics. But that's unlikely to last very long. GM and Ford will need to keep up internationally if they want to stay relevant in foreign markets.
Germany is merely ripping off the band-aid right now (or having it ripped off for them). Short term disruptive but it needs to happen at some point.