I could create a "supermarket startup" tomorrow, by using 0-hour contracts for the whole workforce, forcing farmers to earn less, stocking food of dubious safety coming from China etc etc, all thanks to some wonderful app that will calculate and manage all this for me. That's not disruption, that's robber-baron race to the bottom.
On the opposite, if I create a fully-automated supermarket that does not require any workforce but still provides exactly the same level of quality to consumers and producers, that's real disruption.
The startup ecosystem should not take their clues from Walmart and Ryanair. Before Uber can righteously challenge European legislation, they should prove that they have ways to address the issues that generated that legislation in the first place: are all drivers insured? Are their vehicles safe? Etc etc.