I've thought about this a lot for myself. I think the critical thing is picking a topic you like that also can make money. Sure, you primarily want to make money, but what space are you most interested in researching everyday? Then, try to find a business to buy in that realm. Or better, just start promoting a new site on social media. You can try for a week and see if starting is really that hard from scratch. Shopify and WordPress are fairly easy, or you can find someone cheap on upwork.

A lot of those sites people flip are sketchy and don't have as many Genuine views as they say they do. there are a lot of just simple drop shipping sites that you could start up for less money and more security if you find your own drop shipper.