This is at once a brilliant and useless post. The brilliance is that of course you should provide something that people need that is risk averse, and using the analogy of making tires during the transitional period of wagon to automobile works well. The uselessness is both that everyone cannot make tires, literally or figuratively, and it is very difficult to know what the modern day "tire" is. Is it long lasting, high output energy source? Is it an internet-independent lifestyle-enhancer? Does it make me more energetic without unwanted side-effects or risk to my long-term health?