“Big Tech” tends to refer to the companies.

Edit: To clarify further, I’m not casting those claims about older Big Tech acquisitions as wrong or misinformed. Nor am I trying to make any specific argument about the Democrats’ strategy / Neo-Brandeisian thought here. Just directly answering the question I replied to. I’m quite confident that this particular case against Microsoft, as argued by the regulators, is quite weak and that the political tail is wagging the dog here.