There was a time fairly early in Netflix's streaming era when all the studios were just dumping their old back catalogs on Netflix to get some revenue from 'dead content' that I thought "Wow, someday soon pretty much all the old content will just be available on a central streaming service. The future will be good." Then the stock market started inflating the value of streamers because of ARR projections and studios…
Most things are on Amazon if you’re willing to pay for them individually. It’s more buffet style streaming services that splintered. Per movie may seem expensive, but at the low end of hours per month watch time streaming services are a bad deal.
To that end, I only buy physical media that can be copied and have its DRM removed. On the plus side, Blu-Ray turns 20 next year and still provides better image quality than your typical 1080p stream.