> I don't understand how the more expensive providers can still have customers.

> The main differentiation is support.

Might be a case of decoy effect in action. Swisscom (the expensive option) gets more customers by introducing a cheaper option with worse support. https://en.wikipedia.org/wiki/Decoy_effect

Well, thanks for telling me that! I went swisscom-> mbudget on my fixed line but it seems wingo offers the full 1gbs up/dow for less than I pay now for mbudget mini. Guess I'll change soon