Many businesses try and test out different tactics to gauge which works best. For instance different versions of a Facebook advert maybe shown to different audiences. The version with better engagement and reach will be chosen for replication. This is commonly known as A/B testing. Advances in technology have made it easier to rapidly test and deploy solutions in the marketplace.
Instead of argonising over which business idea or product will work, choose instead to try several options and see what works. There is no best business idea in the world. The best idea is the one which works. And you can’t know what will work without trying.