The problem is that orgs and companies stop caring once they gain the primary market share. They also start dictating standards to everyone and ignoring user feedback. It's symptomatic of our current software development driven economy.
I recall when as a web dev I had to ensure my code was best supported by 3-4 browsers and don't miss that era at all, but it would be much better if proper regulation, consumer protection, and ethical corporate behavior came into play before hostile competition, corruption, and monopoly-driven "dictatorware" do in software market dominance for a change.