Especially, it's not that it can't give you an opinion, it totally can, but the authors at OpenAI don't want you to hear that specific opinion because of their political biases.
Google doesn't have their own LLMs? Microsoft isn't running and training their own copies?
Hell, if you have enough money you could run your own. This doesn't sound like a monopoly in any definition that I use (and I cast a very wide net with my use of monopoly).