Devil's advocate, but starting with a broad based "who to tax" concept allows for more room to horse trade.
If he said front and centre "I want to personally dangle Jeff Bezos and Sergei Brin over the edge of a tall building and shake until their wallets fall out" that gives one clear target to fight over. Starting with an amorphous blob target lets everyone involved say "Oh, we'll exclude X, Y, and Z...." and feel like they won something, while still getting what you really wanted in the end.
It's why they always talk about the budget proposals as "$3.5 trillion" or "$1.8 trillion" without anyone ever saying "my real red-line is the $12k of subsidies to the local dirt farmers."
Yes, and the real trick is to say "Jeff Bezos" without explicitly naming him. Because a law that calls out a specific person has a built-in expiration date.
If he said front and centre "I want to personally dangle Jeff Bezos and Sergei Brin over the edge of a tall building and shake until their wallets fall out" that gives one clear target to fight over. Starting with an amorphous blob target lets everyone involved say "Oh, we'll exclude X, Y, and Z...." and feel like they won something, while still getting what you really wanted in the end.
It's why they always talk about the budget proposals as "$3.5 trillion" or "$1.8 trillion" without anyone ever saying "my real red-line is the $12k of subsidies to the local dirt farmers."