Precisely! That's how insanely powerful this spell is. In fact, I can't think of a spell that would more actively provoke the development of jurisdiction regulation of magic.
I also can't think of a spell that could be of more use within a jurisdiction with regulation against magic than Skywrite.
... Messages like "[X monarch/ruler of the forgotten realms] is a [naughty word]" ...
could abound.
Meanwhile, there's also the considerable issue of:
Sure, these are spells that could certainly leave targets feeling more than disenchanted:
Charm Person, at 1st level, has a range of just 30 ft, a duration of just an hour, an effect of just giving the charmer advantage on ability checks with social interaction (the kind of thing that could be done with two proficient persuaders acting together) and the potentially bitter result that "the creature knows it was charmed by you".
Dominate Person, at 5th level, has a better range of 60 ft, a worse duration of just a minute, an effect that: "While the target is charmed, ... you can ... issue commands to the creature ..., which it does its best to obey", and a result of potentially leaving the creature, after attempting your choice of simple action/s, of wondering wtf. This is especially limited under the Jeremy Crawford
consideration that "No rule lets you opt to fail a save" especially "assuming you aren't ... dominated". This would mean that you can't force a failed save against Modify Memory (which, if a force was possible, would have needed to cast separately as Dominate spells require concentration).
Geas, also at 5th level, also has a range of 60 ft, a long duration of 30 days but an effect of "forcing [the target] to carry out some service
or refrain from some action or course of activity". This could be awesome but, according to spellcasting/combining magical effects, "The effects of the same spell cast multiple times don't combine". You can't both force a target to do something and force them not to take other related actions.
There are also the spells
suggestion and
mass suggestion, but this is why members of the bodyguard and inner circle of the government/monarch all study philosophy as part of their downtime.
Despite a clear and present danger from charms, I'm not sure whether a first response would be to regulate against magic or to encourage magic so as to develop protection against charms.