Certain hardware like monitors and mice have reached a peak-level of affordability and quality in the last... 3-8 years, give or take.

Monitors were in a weird spot for a while, where it seemed just out of reach to min-max for optimal quality, but some newer and reasonably cost effective tech-innovations seem to have address a lot of those issues.

It probably also helps that consumers have been adopting 4k enough to broaden the market so that 2k displays can slide down to the mid-tier on price, while sacrificing very little on display quality (at least for the majority of gamers).