NOT long ago, being the boss of a big Western tech firm was a dream job. As the billions rolled in, so did the plaudits: Google, Facebook, Amazon and others were making the world a better place. Today these companies are accused of being BAADD—big, anti-competitive, addictive and destructive to democracy.

NOT long ago, being the boss of a big Western tech firm was a dream job. As the billions rolled in, so did the plaudits: Google, Facebook, Amazon and others were making the world a better place. Today these companies are accused of being BAADD—big, anti-competitive, addictive and destructive to democracy.