The main issue with the App store (in terms of antitrust) isn't one of consumer choice but rather of taking advantage of network effects to enable rent seeking behaviour. App developers face little real choice, this inhibits the development of new app markets which would otherwise create value for consumers/developers beyond the value lost by Apple shareholders. It's economics 101.
> She is doing what politicians do best, using resentment, jealousy, and more, to gain more power and money.
If these were her goals she would surely fair better with a carrot rather than a stick (tax breaks perhaps). Her current proposals would drive business owners to support her political opponents - hardly a recipe for power and money. The proposals may be somewhat symptomatic, but it is a far stretch to conclude the agenda which you outline.
You seem to have a misunderstanding about the purpose of antitrust regulation. It is not simply a matter of consumer choice or outcomes (a widely perpetrated view) - there are considerations of prices, coercion, competitive barriers and other outcomes, not only for consumers but for competitors, suppliers, workers, investors, citizens, etc.
Even when there is no evidence of a company actively exerting market power regulators still need to consider the potential that they might do so in future.