The next paragraph outlined a federal tax of 100 percent on subsidies that don't lead to taxpayer benefit (like infrastructure improvements to accommodate 50k+ new residents).

The two also don't have to be mutually exclusive. You can look at what Amazon did and say "That's not a business practice that should be followed," while still saying "State and Local governments shouldn't be allowed to offer funds in this manner."

The ‘bribery’ could be referring to the actions of the public servants: offering ‘bribes’ to corporations to entice them to do something (e.g., building a new HQ or factory in that politician’s jurisdiction).