They did indeed, it's routine. Very few coins listed on any large exchange have their own chain, the ones that do have far greater trading volumes than Monero.
But I will grant you the fact that regulatory risk/compliance is also overhead, and that's very high with Monero.
Yes, regulatory risk goes hand in hand with things that are harder for nation states to control and gives individuals more freedom (permissionless, private, anonymous, untraceable transaction are on the far end of that spectrum). You touch on this in your videos so I'm not sure why you're so incredulous about that when it comes to Monero.
https://github.com/libbitcoin/libbitcoin-system/wiki/Other-Means-Principle
https://github.com/libbitcoin/libbitcoin-system/wiki/Value-Proposition
