“However, a brokered convention might be the beginning of a giant shock to the GOP system”
So would space aliens landing and reinstituting the feudal system ... both are equally likely. Zero chance.
We have a better chance of shaking up the GOP by revolting than we do by simply continuing to do the things that got us here in the first place (vote for the GOP lesser of two evils). To paraphrase Einstein, the definition of insanity is to continue to do the same thing over and over again and expect different results.
And if the GOP refuses to listen, then it will continue to bleed membership on into irrelevancy.