Exactly, you've already dumped a ton of money into an upgraded home network. I guarantee the vast majority of Ring households just have a bog standard wifi home network with an ISP supplied router. For those people, ring doorbells and cameras are incredibly cheap in comparison to the unifi ecosystem (especially when amazon puts on them on sale 2-3 times a year). £50 a year for it to just work will be acceptable to most considering the low cost of entry to the system. Of course on this forum you'll have a much higher percentage of tech savvy people and those who have custom setups. But the truth is, most people will accept to pay £50 a year for the doorbell, or a bit more to include a few extra cameras too.