To be honest, the influence of big business has been going on since the getgo. There were scandals aplenty during the 1800s between govt and big biz. I wouldn't call it a takeover, but there is a lot of lobbying and influence-peddling. Ask Hunter Biden. He wasn't the 1st, and won't be the last.
But there were still checks and balances at least. . After the Vietnam War and the Nixon - Carter years, look at how the military industrial complex and the CIA - national security establishment, police state grew ( removing Antitrust laws, allowing vulture capitalism, NAFTA, -30 million manufacturing jobs gone) under Reagan/Poppy and Slick Willy and Dubya....9/11, crash of 08--the growing revolving door between Wall Street and DC, Obama's 'war on whistleblowers', Soros , China $,BLM and antifa- it's all tied together. Dominion election official fraud.... We're pushing $30 TRILLION in debt by 2022, no matter who is president. I could ramble on but it's no use for 8 people to hear.
But Trump is their antichrist in a sense, because he is working for all of us, even the (D) losers.