Apple was created my making devices on breadboards, that doesn't mean that the next Google/Apple/Microsoft will be able to do the same thing. Times have changed, the barriers to entry are slightly higher. $1MM to seed a company, that's the minimum... unless you are only interested in infantile businesses like glorified classified ads, crappy thow-away games, or one-trick pony "cloud" services... $80k doesn't even get you a hot dog stand!
Apple was selling hobbiest boards, Microsoft the license to DOS.
You don't have to build a whole company, just find a market and become sustainable.