I started thinking this route. 12 months and $2000 later I ended up with a 15U rack in my basement, Ethernet drops in most of my rooms, wifi that blankets my home and yard, 4K security cameras, and more. Contrary to what you might read from a vocal minority on Reddit, my UDM-PRO has been solid. It was a great investment for the work from home era.
Not saying it wasn’t worth it - it’s a huge step up in reliability from what I had, but I kinda feel like an EdgeRouter is a gateway into the wider Ubiquiti ecosystem.