Yes. Even companies like Google have had plenty of scandals involving senior leadership. I've personally heard more than a few that are not public from people with direct knowledge. The difference is that some companies and executives are simply better at containing the fallout, suppressing what gets out, or cultivating such a polished public image that allegations seem implausible because they clash so sharply with the persona they project.

If you're considering working for a billionaire, choose carefully whose fortune and influence you're helping expand. Caveat emptor applies to employees as well. Or even better, don't work for one at all.