Once you've got a car, there's not much incentive to travel by other means, as car drivers want to get maximum use from the fixed costs of car ownership.
Once you get outside London and a couple of other big cities, most people don't find trains that useful - they're certainly not cheap, and increasingly unreliable.
I live in a rural settlement (population circa 9,000), it's surrounded by countryside with almost no one in it until the next villages, whilst one is almost abutting it, it's still for quite a lot of farmland and tiny hamlets for the next 2 miles, whilst in another direction there's a small village about 1.5 miles with a school and then it's almost 6 miles until you get to the next place with a school. That's in a location about an hour from London.
We live in a village, population around 750, 4 miles from the nearest town, again with another bordering village, pop. c250. Inland there is really nothing, with just a scattering of small towns (Bridlington, Filey etc) at the coast. We are fortunate to have retained our rail station, we should have an hourly service each way, terminating at Scarborough to the north and southbound calling at Beverley, Hull and with most services carrying on to Sheffield. There are only 2 buses per day, these were cut once the train went hourly in about 2018
Before the current problems the train was useful, two settlements totalling under a 1000 are never going to justify a service but as a stop on an existing line its useful. Passenger numbers had been rising and on the whole the service was good. Roads in the area are not good, and get busy and congested in summer so for trips into the bigger towns rail is an attractive option. Fares are reasonable, Hull is about £18 anytime/£15 off peak return, and its around 35 miles each way, and obviously cheaper with a rail card. So rail can work in a rural area if the infrastructure already exists. Again prior to the current disruption trains were fairly well loaded, even packed in the summer, with only the start and end of service trains carrying mainly fresh air. By changing at Hull, Doncaster or Sheffield a lot of places are accessable. Travel environment is OK, the route is mainly cl 170s which seem well suited and comfortable.
Fast forward to the last few months and usage has plummeted. As an example just before Xmas I needed a quick trip Beverley to pick an order up. Plan had been to use the train, it was a quick in and out. I had to drive as there were no trains, journey time was similar, parking was a pain (as in tried 2 car parks before I found one with space) and cost an extra £2. One journey lost, and plenty of others lost locally as well. No its not going to make much difference in the grand scheme, but its like this over most of the north, TPE and to a lesser exent Northern issues have decimated services prior to the current disputes and latest round of strikes have really just meant that train is now not an option.
I think the current issues have set the railways back decades and it will take a long time to recover, its not like the bounce back after covid, that was people told not to travel, this is people not being able to travel due to lack of trains and once people make alternative arrangements the railways would have to win that customer back.