[bradfitz]

I haven't. I have 5K and 6K monitors. That's indeed privileged, but only for a bit until that's soon commonplace and cheap. So this all sounds like a very temporary problem at this point for something so subjective. Every time this topic comes up it's the same "but I like the look of $OS rendering the best" comments.

[6yyyyyy]

High PPI screens have been around for 10 years or so, and they still cost about twice as much as a standard PPI screen the same size.

Put yourself in the shoes of the average computer purchaser: Would you rather buy a high PPI monitor, or two standard PPI monitors? To me this is a no-brainer.