* With sufficiently large and entrenched companies.

There's a semi-common meme on Twitter where people share their most X opinion, where X is a group the poster doesn't identify with; or sometimes my least X opinion, where X is a group they do identify with.

https://x.com/Aella_Girl/status/1899029178856710572

In that spirit, my least libertarian opinion is that exclusivity deals with sufficiently entrenched companies[1] are bad and should be illegal[2].

To make it even less libertarian, I think it should be an unfair playing field and their competitors should be allowed to pay for exclusivity[3]. If you're a new entrant to a market, an exclusivity deal might be the only way you can break in, and more competition is good[4].