Entrepreneurs need to start building today. The barrier to entry in tech is low, so start designing, start coding it, launch it, build prototypes, build a working version of it. The Internet has amazing powers of distribution. You can test your ideas. You can see if it works, if it doesn't work, whether it's fun, and whether you're sufficiently motivated. People who go into entrepreneurship to get rich aren't going to be happy. It’s the building of things that makes you happy. You have to enjoy the process whether you succeed or fail.