A former tech star is fading fast. Meanwhile, two smaller tech stocks are set to steal the show over the next five years.BlackBerry Limited (BB 1.29%) used to be a big deal. The Canadian giant of the early smartphone market once had an $83 billion market cap, generating as much as $20.6 billion of annual sales.Refocusing on cybersecurity services and connected-car software, BlackBerry enjoyed a brief recovery in 2019 and 2020. Unfortunately, BlackBerry's trailing sales are now down by 40% in five years and ...