Don't think so. As a business owner it is better to sell out and cash in when the chance arrives. I know quite a few who didn't sell and saw their 'fortune' evaporate to zero.
Only a risk if they didn't run a substantial profit or reinvested everything and gave themselves a pittance for salary.
He said he was already rich so presumably that was not the case for him. If it goes tits up he will have lost the chance of being filthy rich and will have to settle with being plain rich.
Yep, not everyone aspires to be a Elon Musk, Larry Ellison, or Bill Gates!!
Interestingly we all discuss about how short term thinking is what's it's all about in business today, few if any CEOs are long term thinkers and most adhere to Wall St and Share Holder values, like quarterly returns and stock value!!
Yet many of us here, ourselves included, worked our way thru college flipping burgers, mowing yards, painting houses, repairing TV & Stereos, whatever it took to stay in school and survive. Now what kind of thinking was that? We all could have got better paying 8-5 jobs and forgo college! We didn't, we were all long term investing in our future, not short term pocketing more $ with less life stress!! Yet some of these same folks that made that long term investment for college now are making the short term decisions in most companies.
Long ago when we were proposing for investment $ in a local university lab we had a projector slide preparation (yes, that long ago, PP wasn't around then!!), we looked around the room of executives, from MIT, Stanford, Cornell, Columbia, USC, RTI and so on and realized the presentation was hopeless, so we didn't present the slides and used the above long term college investment as a challenge to each and everyone in the room!! Ironically this resonated (at least for awhile) and we got the substantial funding requested

Best,