I cant imagine the business dude buying up all of the commercial real estate is directly behind the bomb/fire. It would be far too much of a risk (prison sentence for arson) for far too little gain, considering he already has the means to pose a threat by simply outspending his competition.
Now, i can see some over eager lackey, like the douche that accompanies Riley, going off script and trying to curry favor, being all like, "see what i did boss? I went above and beyond to get you what you wanted!"
But, if I had to guess without any other evidence, id say it was the stupid shit from the dance competition. Petty, insecure, sore loser, got publicly humiliated, he has all the hallmarks of motive and personality to do something like that.
Hell, he could have been the person in the bear, giving him access to the place without anyone suspicious of him being seen there.
Now, i can see some over eager lackey, like the douche that accompanies Riley, going off script and trying to curry favor, being all like, "see what i did boss? I went above and beyond to get you what you wanted!"
But, if I had to guess without any other evidence, id say it was the stupid shit from the dance competition. Petty, insecure, sore loser, got publicly humiliated, he has all the hallmarks of motive and personality to do something like that.
Hell, he could have been the person in the bear, giving him access to the place without anyone suspicious of him being seen there.