In Manhattan ebike access is excellent -- there are tons of bike lanes and bikeshare stations. They are typically as fast as Ubers for getting around the city since traffic is so bad here, and much cheaper. The main issue is that it's not very safe. Probably this does not generalize to most other US cities.
Unfortunately the citi bikes are expensive enough that they may be more expensive than sharing an uber with one other person.
Anecdote, paid $15 x 2 to take two citi bikes across Brooklyn to avoid a two-leg l-shaped subway ride. Coming home took a $25 uber. The bike trip was ~30% faster. It sucked having to navigate around all the delivery trucks and random private cars parked in the bike lane.
$15 seems too much to me for the citi bike for a 25 minute ride. But I'd do it again to save 10 minutes sitting in traffic in an uber.
Oh and the next day we did the same journey via l-shaped subway ride. It took about 10 minutes more than the bike ride, and included an awkward street-level and overpass transition between the two subway lines. Much much cheaper than uber or bike.
My take is there are a variety of crappy options to get around Brooklyn.
