I became cellular only user last February, when I moved back to Finland and to a countryside. I really don't miss the old VSDL time at all in France. The quality was bad, lots of package drops that the operator couldn't fix and there were no unlimited 4G offers available at that time. Yet, I preferred 4G for more important tasks - it worked better.
Here I pay 12,90€/month (tax incl.) for 50Mb/s LTE connection, unlimited data. I use ZTE MF286 LTE modem to share it for a tv, phones, computers, everything. We can watch Netflix HD with multiple screens without hiccups. I'm living in a village of 3500 people, and the best wired connection I could get is a 24M/2M ADSL, and it'll cost 29,90€/month with a contract. That makes LTE even more appealing. This 4G/LTE has been best thing since I got the modem, and for the past 6 months, it hasn't throttled even once. My operator is using two frequencies here (800/1800) and the latter is always giving top speeds.
I think it is really up to the operator to create a great network. If there are a lot of users in a small area, just use less powerful cell towers more densely and use more frequencies... unless it is a VERY big city. 5G should be the answer for mega-cities. They're already testing those networks here and that's what I've heard; lower latencies and faster downloads especially in the big cities.