Providing liquidity a fraction of a microsecond faster than a competitor doesn't seem like real value to me, more like a cover story so that politics doesn't outright forbid high-speed quantitative trading.
Those social media companies, start-ups people do for venture capital cash grabs, Web3, and addictive mobile games all create such value.
EDIT: Okay, as the replies mentioned, OP did not make this argument. I still feel it’s valid, as a lot of big tech is neutral/worse for society, yet they are some of the loudest critics of low latency liquidity.