The challenger providers were cheaper, simpler, faster and more efficient. And not just a little bitconsiderably so.
The incumbent provider Verifone performed considerably worse than iZettle, Square and SumUp.
Most iZettle, Square and SumUp customers would save money by switching to Verifone. But that doesnt mean they should.
Verifone are so far behind with their software compared to iZettle, SumUp, Square and Shopify that I doubt they'll ever catch up.