I don’t see how it’s a benefit to capitalism or companies or, well, anyone, really, to allow people to make thousands of trades a day for minute profits on each.
My gut feeling is that the stock market would not suffer, and less resources would be wasted, if trades and updates to stock prices were limited to, say, one batch per hour.
There are probably reasons the system is the way it is though.
Trades once per hour? But that would be fair for everyone, can’t have that. People pay thousands or millions to get stock prices 30 seconds faster, because there are fortunes to be made with 30 seconds of advantage.