While such regulation may have been imposed to try to increase safety, quality, and consistency, for example, it also ends up interfering with the incentives of the participants.
The lack of real competition, combined with the introduction of significant unnecessary costs and other overhead, encourage and enable the participants to act in ways that may not be beneficial to the patients.
The truly unfortunate part is that such regulation often takes options and choices away from the patients, preventing them from accessing alternatives that may help mitigate or avoid the perverse incentives introduced by regulation.