In a revealing tweet, he admitted his ambition to turn Twitter into an 'everything app'. What did he mean by an 'everything app'? He meant nothing less than a gateway to technofeudalism, one that would allow him to attract users' attention, modify their consumer behaviour, extract free labour from them as cloud serfs and, last but not least, charge vendors cloud rent for selling them their wares.
— Techno Feudalism What Killed Capitalism by Yanis Varoufakis (Page 134)
Musk's ambition for an "everything" app, does sum up techno-feudalism, and why we should be worried about it. One just needs to look at WeChat in China, and the power that it wields.