There are types of business ideas that are designed to turn into multi-million corporations. Moreover, few business ideas have the potential to turn into small or medium-scale businesses. For a business idea to turn into a large scale, there has to be some investment. However, if you wish to start a large-scale business without investment, the key is always to start small. There are large-scale business ideas that you could start, including quantum computing, cloud kitchen, solar energy setup, biometric sensor company, 3D printing business, artificial intelligence business etc.