Robinhood opened up stock trading to a large portion of the population that would otherwise not have been interested in traditional trading platforms with high commissions.

Their success helped to pressure companies such as TD and Schwab to mostly get rid of commissions as well, which is great for the average trader

I think Robinhood has a lot of problems, but to say they're not pushing any boundaries ignores the huge changes they've brought to the industry.

This is the 21st century low cost trading has been around for several decades now

Commission-free stock trading hasn’t, though. If you’re only trading a couple of shares at a time, $5-10 for a trade is a pretty steep fee.

The fees I am referencing were imposed by brokers, not exchanges. Our exchanges have stock splits, but that still doesn't make a $10 fee on a single $50 share very palatable to the small-time investor.

A 50$ share should be split which was my point and tbh if your only investing $50 you should not be investing in individual shares.

Whether or not you think that market for trading should exist, it does.

Pushing the boundaries? They wrote an app that gamifies stock and options trading...