If by choice you mean a pre-existing team, then yes, they can buy that product or not. If you’re talking about a future franchise, I don’t think so. Feasibility studies and due diligence by a prospective owner dictates weather there is a buck to be made. But I’m not sure if I missed your point or not.
Let's say I want to put a pro football team in Ottawa that will play during the same time frame as the usual CFL schedule.
Would I be blocked from doing that by the Canadian National government or will both the Redblacks and my team be permitted to coexist in a stadium that is NOT owned by either team (assume the stadium is owned by the province).
When the Redblacks are home, my team will be on the road, and vice versa.
It's owned by the city and managed by OSEG who have vested interest in the REDBLACKS and making some money .
So if you have a new styled US team and want to pay them rent for a new football league team they would probably take your money most likely in advance and give you dates that don't infringe on the soccer team and the Canadian football team . Unless the RB's have an exclusive lease for pro football I don't see an issue .
Your Most likely be given third choice or even fourth choice after concerts which may interfere with whatever product your selling .