Let's hope you're right, but you might be underestimating the "$200 per month (robo)engineer can only do it like this, therefore this is the way to do it" factor.
I bought 3 EAP330s and TP-Link deprecated them after a year or so. No more firmware upgrades for their (then) top "enterprise" access points. Rumour says they weren't happy with the chipset, so decided to abandon them altogether (just this model, cheaper ones were on different chipsets and support was available for longer). Last time I checked there was no OpenWRT support of any kind. They did hang when I had port aggregation enabled and seemed to run rather hot. But feature-wise and non-trunked-networking-wise they were fine, supported what I was looking for, no cloud, I didn't even use the controller, you can just manage them "the old school" way. But don't count on years of support.
https://news.ycombinator.com/item?id=48168928
https://www.ft.com/content/fba35eca-df3a-4ad6-b42d-eb08eb7c9...
https://archive.is/6VpWy
Spoiler: smartphones, social media, housing.