The real strength of Dropbox comes from the ecosystem of apps that use dropbox to store data. It is hard for newcomers to challenge that network effect. But competitors like Tonido are doing interesting stuff by focusing on the security, privacy and the private aspects of owning your own cloud. If they are able to change the narrative from utility to trust and security then newcomers have a fighting chance.
Finally it comes to what wins the customers: Trust or Utility or the Balanced of Both.
While i condemn the violence, i have hard time justifying uber as a new revolution or advancement of technology.
Medallion owners pay close to 1.0 M $ to get the Taxi license from the city (NY) and they are not doing that for charity. If a new middlemen like Uber try to take the market without paying single dime it is bound to cause issues who have played by rules and invested significant money to acquire the license.
Uber simply tries to aggregate the demand side and demand concessions from the supply side to get the leads. Portraying Uber as egalitarian is wrong in so many levels.