Horses were not cheap nor universally available. And cars had the obvious benefit that they did not leave literal horse shit around the city.
This "revolutionary design" does not offer any significant advantage over the existing systems for e-bikes. A regular e-bike without power is a just a regular bike. You can adapt a regular bike into an e-bike for < $600. Any run-of-the-mill mechanic can figure out how to work on a basic bike. This one will probably require some "certified Rivian expert" to work on it.
Only irrational neomania can justify being interested in this "revolution".