Honestly, with this issue, and it's a huge issue, it seems the government is broken. I don't know how the Dems plan on solving this either, so I'm not sure replacing every GOP politician with a Dem politician will solve anything.
I think blocking all these M&A would go a long way too. No one can compete in an industry with just one or two giants who enact huge barriers to entry, etc.
Who proposed that? Bernie?
Keep in mind that Obama (widely seen as a sellout from Dems and the antichrist on the GOP side) was effective in reducing mobile subscription costs by blocking the AT&T / TMobile merger in 2014 - that was the FCC.
I'm of the mind that no large company mergers shouldn't be allowed period, at least for a long time. Small company mergers in growing industries, sure. These large mergers in established industries only serve the companies and hurt both the workers and the consumers. The word cartel comes to mind.
I think the biggest problem with US politics, at least in the executive branch, is presidents need to be cautious until the last 2 years of an 8 year term, and still, anything radical they do can hurt the party. I think we need something radical done to fix middle America.
The Dems need to go back to the 50 state strategy and just "show up" at a number of uncontested races preparing to lose but win the 2nd or 3rd time - the problem is that the establishment wing of the Democratic party cock-blocks that and actively advances "their person" into such races and proceeds to lose them (blaming the grassroots candidate in the process), while ignoring large swathes of winnable races.