I live in Zurich, I have Fiber7 (https://init7.net) at home and couldn't be any happier. They don't cost more than the DSL packs of the big firms, I get 500 mb up and down on the router with wifi and they have superb support!
Interesting model: the price is the same for everyone, while bandwidth is the maximum they can offer in your location. Excellent support. I bought a TP-LINK MC220L + patch cables from them, and hooked up an edgerouter lite for PPPoE & VLAN tagging. Already had a wifi router (google wifi), which sadly can't do VLAN tagging. Haven't noticed any issues with the double NATing.
Once you deliver the fiber, the marginal cost of increasing port speed is a rounding error as you do routine infrastructure refresh.
Where I work, we’re increasing many wan links to 10Gb because the cost is marginal at scale. In some cases, it can save money versus an older slower tech!