Right but we need a dose of realism. They don't develop the drivers, and they don't make the hardware. If the manufacturer doesn't care, then that's that.
It's a network problem. Manufacturers aren't gonna care unless it's a big OS with lots of users. Your OS won't get a lot of users unless it has drivers. So the result is stagnation, and only the Big 3 OS continuing. Well... really the Big 2. Mac OS is a unique situation.
Edit: https://www.haiku-os.org/docs/userguide/en/workshop-wlan.htm... here wifi seems to be working (which another commenter pointed out as well)