Billionaire investor Mark Cuban spent his Sunday doing what he does best: stirring the pot. This time, his target is the healthcare industry's biggest players. In a series of posts on X, Cuban argued that vertically integrated insurers and providers have gained too much control over the U.S. healthcare system and are "abusing their market positions." He also took aim at regulators, including the Federal Trade Commission, for failing to stop the consolidation wave over the past decade.

"There is a reason we have anti-trust laws," Cuban wrote. "If you want less government in healthcare, it can't happen until these conglomerates are broken up."

Cuban didn't stop at the companies themselves. He also called out lawmakers for not getting behind the bipartisan "Break Up Big Medicine" bill, introduced by Sen. Josh Hawley (R-MO) and Sen. Elizabeth Warren (D-MA). According to Cuban, several Democratic senators privately support the legislation but are reluctant to publicly endorse it unless more Republicans join the effort. "Other than Josh, not a single Republican senator I have talked to has the guts to stand up for it," Cuban wrote.

Cuban Targets ‘Big Medicine'

This isn't the first time Cuban has gone after healthcare consolidation. He's been a persistent critic of the growing influence of vertically integrated insurers and pharmacy benefit managers. Earlier this year, he said large insurance companies control too many layers of healthcare—from pharmacy benefit managers to wellness programs to drug access—making it nearly impossible for smaller players to compete.

"There's just no way to compete with these enormous companies that just don't care," Cuban said during a policy conference in Washington earlier this year. "You have to break them up."

Cuban also pointed to financial pressures on doctors as a driver of consolidation. In a separate X post this month, he noted that rising medical school debt is pushing physicians to sell their independent practices and join large healthcare systems.

Drug Pricing Remains Key Focus

Healthcare affordability and pricing transparency have become central policy concerns for Cuban. Earlier this month, he appeared alongside President Donald Trump at the expansion of the TrumpRx prescription drug platform, which added more than 600 generic medications. At the event, Cuban praised efforts to reduce prescription drug costs, saying "anything that saves patients money is a win."

Cuban's message is clear: the healthcare system is broken, and the only way to fix it is to break up the giants that have too much power. Whether lawmakers will listen remains to be seen.