This has been on the roadmap for years, nothing really new here. This is one of the few areas where Microsoft is making Windows better. Universal print is a very good things and so far works as expected. The last step is ending the option for 3rd parties to add traditional custom drivers.
It is somewhat of a hurdle, but it is for a long-term good. The downside is that printer manufactures are likely going to use this as an excuse to force users onto new printers. Considering this roadmap has been public for years, then printers sold during that time should be covered...but I'm sure they will have a different opinion.
Where are you seeing that? It seems hard to believe considering nothing in the Apple ecosystem gets that level of access, and the same for Android unless you put some kind of custom rooted image on the phone. It just seems like asking for something that hasn't ever been given to anyone, is a stupid strategy; it's going to be an automatic 'no'.
Printer companies have been doing a half-**** job of creating and maintaining print drivers forever and this isn't new. Microsoft has been warning and preparing companies that their drivers needed to meet certain requirements. It has got to the point over the last few years that Microsoft has been moving towards handling the print drivers in-house rather than continuing to watch the printer companies mail it in. Hopefully, the consumers will benefit, though I think the enterprise is probably more of the driving force.