That is what I thought when Holga and Diana became popular. But the whole idea behind those is poor image quality. Since many seem to believe that the image quality of an LCD screen that you might be reading this on is good enough, and I suspect good 35mm film can do that, maybe that isn't the reason. (Not to mention those who only view images on a cellphone screen.) At some point, higher resolution is needed in case you want to crop, and maybe severely crop. But if you print whole images, or display them on an LCD screen, high-end digital cameras are way overkill. When I was in college, high power and low distortion stereo systems were popular. It didn't matter that you couldn't play that loud in the dorm, or hear anywhere close to the low distortion of modern (at the time) transistor amplifiers. (And now an iPhone and ear buds are popular.) Also, the low cost of shooting digital gives quantity over quality. People shoot a lot, hoping that one or two will turn out. But those shooting more expensive film, think a little before shooting. According to a nearby lab, film use went up during Covid. I wouldn't have guessed, but it seems that social distancing encouraged many hobbies, including film photography. It might go down as it goes away, but maybe not so fast as you might think.