I don't think I'm doing anything crazy, the odd game from steam, some ML models from huggingface, running a Plex server for myself and friends/family. I checked my usage and regularly exceed 1TB every month, so that's why I was put off.

I've been lucky that a new ISP came to my area and I can avoid Openreach infrastructure completely, they've put a FTTH line directly into my house and offer up to 8Gbps symmetrical