Whose to say every business must operate the same? Certainly not in my experience.
And if CBS loses, then they lose. I'm sure many fans would be happy about that.
But these are competitors looking to take CBS' share of the market. These companies do not operate in a vacuum.
I am not taking joy in this, I just do not think CBS All Access is worth the money they are charging. I think it would be better if Star Trek was on a better service and I am glad in Canada it is. I would not get CBS All Access if I lived in the US.
Again, above I just posted an article saying CBS All Access grew, so they are fine, for now, but it is silly to think increased competition will not change the market.