That is increasingly true and will only get more mainstream as times comes by. Why pay for Home WiFi. ( Internet ) when you have 5G / Mobile Data. 5GSA will further increase Mobile network capacity, and mobile network will be all you need. MNOs will specially those without cable / fibre to home infrastructure are already promoting 5G home solution as replacement.
I wouldn't be able to do what I do at home if I had to do it entirely through a mobile network. I have a 10 Gbps symmetrical fibre-to-the-home connection.
