Having options like this is great for powerusers, but the vast majority of people are not that. They need something that just works. Of course that still doesn't mean they need their garage door collecting telemetry data, but they need something more than a LAN-connected smart device.
That being said, setting up the HA and Wireguard server is definitely a more demanding experience. Although once setup it's pretty much a once and done sort of thing, and they're are integrated ready to go solutions available.
It would be nice to see something like "Geek Squad" offering that sort of service instead of just running AV software while trawling for nudes on customer laptops. No guesses on what's more profitable though.
You don’t need a cloud server to remotely access a device.
For example, Apple Home does not work by default over WireGuard.
Not for the average consumer.
I actually have gotten to know a lot of folks who are massive into home automation, who also know precisely fuck all about computers or whatnot.
Allow package deliverers to put a package in your garage instead of on your step.
When I had MyQ, I used it almost exclusively when I was on my motorcycle. I had it configured so that I could tap a button on my phone that tracked my location and enabled a geofence around my house so it would ping the MyQ to open when I got about a quarter mile from home. I called this my "riding home" mode. This saved me the trouble of having to get my gloves off and open the door through the app when I got to my driveway, and I didn't have to leave a garage door opener on/with my bike.
These very practical daily occurrences can make devices incredibly annoying and frustrating for typical consumers who want it to just work.
I'd rather that it use the LAN, if I'm there at the time.
Data collection and remote access can just be their own functionality.