Risky even for the experienced.
Today, 1 single disgruntled customer can bring you down on Google, FB, Tik Tok etc....
Not to mention that you need to be around constantly as if you are not there, the employees will make a mess of the operation and clients will not come back.
Even assuming all goes fine, I could never entertain all those drunk, rude, arrogant westerners with their oversized egos and downsized wallets, acting big in Thailand with their rent-a-week thai lady and her friends out to get a free meal.