If there were, they'd do it, but it doesn't help their business, so they don't.
Just because things are as they are, doesn't mean that they couldn't be better.
But regulators do revisit existing rules all the time. If you really want this then feel free to file a formal petition for rulemaking. If you do that then they'll have to at least look at it.
https://www.faa.gov/regulations_policies/rulemaking/petition