The change you want is political campaign finance reform. Everything else is secondary.

Without financing reform, the accumulation of wealth leads to political influence that furthers the accumulation of money and political power... creating laws that constrain the market to favor the big players over free innovation and competition.

Google/FB are not alone... broadcasting, fossil fuel, agriculture, pharmaceuticals, cell network, retail chains, financial corporations, individual citizens are by far the least significant voice in our elections.