Because Marriot's BRG is relatively hassle free in its operation, it has generated a lot of goodwill and actual business. Modifying it will invarially cost Marriott a lot in overal scheme of things. But as someone said above corporate executives in US are known to be self-destructing types across many industries. So anything is possible.

In case anyone that matters at Marriott is reading this, I usually go out of my way to give Marriott my business (even when LNF is not possible) simply because of two items:
a) they were one of the first one to establish property-wide non-smoking policy
b) found their LNF balanced and relatively pain-free

Now, first criteria is no longer exclusive to Marriott. If they take away second one then Marriott is as good as other comprative chain (at least to me).