The idea behind "living in the future" is that products generally get cheaper and easier to use as early adopters contribute feedback, founders learn more about their market, and outside capital puts more minds to work on the problem. Hence, products that are only for "wealthy folks in SV with no free time" eventually become cheap enough that everybody can use them.
Uber certainly followed this growth curve - it started out as a service to call a black car to drive you around town, something that even the founders called a luxury for 1%ers. So did computers as a whole ("I think there is a world market for maybe five computers." - Thomas Watson, 1943), smartphones (at $600, the iPhone was considered a toy for luxury consumers when it came out), Facebook (initially only for Harvard University undergraduates), and LinkedIn (started with wealthy professionals who had lots of contacts).
It doesn't mean all startup ideas for wealthy, time-poor consumers will cross the chasm, but it seems to be a lot more feasible to go from wealthy consumers to poor ones than the reverse.
(Interestingly, it's the opposite story with B2B startups, where it's easier to add functionality than cut prices or improve ease of use. Hence the low end eating the high end, per Innovator's Dilemma. Actually, this effect in B2B markets may be behind the cost-reduction effect in B2C markets, as consumer firms start finding cheaper alternative suppliers that have recently moved up-market.)