One problem with this approach is that the customers of the app stores generally aren't individual developers, they're the companies that make the apps. It would be stronger to say

  Uber, King Games (candy crush), Roblox, and PUBG Mobile are dissatisfied with the way policies are unevenly enforced on the App Store / Play Store.  Here are our demands, kindly address them or we will collectively deprive Apple / Google of the app revenue and band together to make our own.

than

  Developers Alice, Bob, Carol, Dan, [...], and Zelie, who work at Uber, King Games, [etc] are dissatisfied with [...]

... Although, I can't say I would like to live in a world where the biggest revenue producers for the app stores get to dictate terms to the app store providers.