For bootstrappers, the philosophy here is sound. Don't make a fancy restaurant, just build a better burger joint. There are endless burger places. Why? Because people love burgers. Innovation is great once you have money to burn. Until then, be the corner roast beef place that everybody loves and is an institution. The business model is sound, no great innovation is necessary, just hard work, persistence, cleverness yes but not genius. Startup this way is still challenging but not impossible, and initially no major pivots are needed. Customer acquisition is still the most difficult part, and that takes time no matter how well you are funded.