Billionaire investor Mark Cuban.Rick Bowmer/AP Images FTX customers who lost all their money when the exchange collapsed should blame the Securities and Exchange Commission, according to Mark Cuban. "It's the SEC that chose the wrong path to regulate crypto," he said. Cuban also unfavorably compared the regulator to Japan's financial watchdog. Mark Cuban blames the Securities and Exchange Commission for FTX customers losing all their money when the exchange collapsed in November.The billionaire investor weighed in on the digital asset space Monday via a lengthy tweet slamming the US financial watchdog."Of course they chose to litigate to regulate," Cuban said."It's the SEC that chose the wrong path to regulate crypto and cost billions," he added.