Ask Peloton founder and CEO John Foley what his vision is for his disruptive fitness company, and he uses lofty terms like, "the promised land."

There is no vision too wide, no possibility too grand to Foley, who in barely five years has taken one product — a stationary bicycle with an interactive computer screen that streams live classes from one Manhattan studio — and turned it into a $200 million company at the nexus of fitness, technology and media.