There are some good options still. You just won’t find them in most retail shops. And they are more difficult to set up for non techies.
I have migrated my network at home over to ubiquti equipment. One nice feature is that some of their router/firewalls support functioning as a nvr with their cameras. It also gives a really nice interface for remote viewing. It’s not the cheapest solution and advanced setup requires some learning. But it’s a great medium complexity option with very nice cameras including a doorbell camera. I’m going to start migrating all my nest devices over to ubiquiti cameras in the near future.
There are also cameras that can record to a local NAS (like a synology) but I’m less familiar with the current options.
For now with my Nest system I simply don’t have cameras pointing anywhere private (like inside). I don’t see any major security risk of someone hacking into my external video feed which is visible from the street anyway. My main motivation to switch to on site recording is to drop subscription fees and avoid the current chaos of the terrible “improved” google home camera interface.
(Check out ubiquiti/ unifi, their new cameras have some cool AI person detection systems, and you can run them on PoE so only one cable, or use a wifi model)
