Some will be. However I think we will see a cliff. As ICE cars become less popular gas stations and the refineries supplying them will close. This will start happening when EVs have been 25% of the new market for 3 years, and accelerate when they have been 50% for 3 years. By the time EVs are 75% of the new market gas will start becoming expensive and so EVs will quickly jump to 98%, and people with ICEs will start to plan trips around where to get fuel. That last 1-2% will be some niches that cannot use an EV for some reason, and so they will lobby to reverse the law - but by then it will be too late for ICEs: a few years latter those with an ICE will special order fuel from the last refinery remaining in the world.

It will start slow: gas stations will be less profitable, but investors/banks will take time to catch on so they will be built in larger numbers than the numbers justify (if you are an investor take note: there is opportunity to make money in shorts if you get it right - I'm not an investor so I won't be playing this). Then they will all see reduced profitability. When pumps break or tanks fail inspection someone will decide the market doesn't justify the investment in fixing/replacing them an so they will close and they won't be replaced (the part already happens, but there is some other new station nearby to make it up)

The next part will accelerate as unprofitable gas stations go bankrupt. We will probably see some over correction in places as a corner than had 4 stations but can now only support 3 will see several go bankrupt at once, and then the one that just manages to hang on will be wildly profitable.

The last part will see us where gas is hard to get. If you have an ICE it is no longer a case of when the fuel gauge is low you stop for fuel, it is you know where the stations you use are and ensure you can get back to them. when on a road trip you plan around where gas stations are (much like EV cars have to now, but soon an EV will find chargers every 20 miles and so won't have to worry - some places already have EV chargers that dense)

Note that I said nothing about refineries. Many of them have better management and are watching this. At least some are already watching this and making plans to reduce size as it happens, between that and non-travel markets they will be okay for longer and probably can spin down their business. Watch out for the small ones: some of them are only running today because when they shutdown they have to cleanup decades of pollution - expect a bunch of "EPA superfund" projects around them.

I believe Norway is already close to the first mark above, and probably other countries. I expect to see it show up in data (that I have no clue how to access) soon.