What do Dell, Cisco Systems and Symantec have in common with Continuum, Actifio and CloudBees? They were all startups at some point over the last 30 years. Continuing our celebration of CRN's 30th anniversary this year, here's a year-by-year look back at some technology startups through the last three decades. Can those latter three companies have the same success as the first three? Check back in 30 years to find out.