When you’re renovating that expense is relative imo. And the cable is relatively cheap imo. Nice wall sockets for them are super expensive though. 200 euro or thereabouts for 500m of cat6, but 20 euro per outlet pair adds up. Definitely still worth it, because like expected there’s more stuff to connect.
I know it can be cheaper but I wanted nice Niko sockets that fit the same cover plates I used for my lighting switches and power sockets. It’s a house, not an office, so paying more for things to look like I want them is also worth something, for me.