Would This Trade Be Legal?

Scenario

I'm a software engineer at a publicly traded tech company. I'm of course subject to insider trading rules for my company's stock. No questions there.

We have a vendor we use heavily that is also a (100B+, S&P 500 component) publicly traded company. They are terrible. They cause more headaches than the rest of our systems combined, and it's not close. Constant outages, outdated systems that their own engineers have no understanding of. We are in long term contracts with them, and leadership doesn't see the value of investing in building out of our dependency on them, but every technical-minded person who has to interact with these systems immediately starts talking about the need to go elsewhere.

My thesis boils down to, basically, nobody who has had the misfortune of using this company for their services will ever choose them again if they are in a decision-making role at another company, and existing customers will preferentially seek alternatives as contracts expire.

My Question

Am I allowed to short this company (via covered puts or bear spreads or any other instrument)?

My company is just a customer of this company, so my view is that it would be akin to shorting Starbucks because you think their coffee is terrible and you think competitors will chip away at their market share.

However, as an enterprise customer, I have access to documentation about their systems and interactions with their personnel that are not widely publicly available, so I don't know if there's a gray area here.