Agreed. In the past you would pay for calling and text messages and data was often unlimited at the higher tiers, but since nobody pays extra for calling and texting anymore, they’re now charging for data. Luckily they can’t charge extra for EU roaming anymore.
Data caps on landlines is something that I haven’t seen for a very long time in my EU country. The last time I had a subscription with a data cap must have been with a 56k modem, if at all. Cable and DSL might have had fair use policies back in the day (or maybe they still do, who knows), but no hard cap. Or at least not that I can remember.
Internet nowadays is way too important to have data caps, especially at home. 5G should definitely be next. Differentiate in speed all you want, but ditch the caps.
Average none, though 2.5 Gbps is getting more and more common and WiFi is catching up too. You could max out multiple slower devices at the same time without hitting the limit of your uplink. I don’t have a use case for that, so I’d only upgrade from my current 1 Gbps to higher speeds if the price is comparable. That doesn’t mean that others don’t have a use case for it.