You and I have very different definitions of the word "strong-arm". By that definition, I just strong-armed Apple into giving me an iPhone by giving them $1200.
Me buying something is different from Apple buying something because the two things have different prices?
To strong-arm someone means to impel them by physical force, especially against resistance, not to give them so much money they'll be happy to cooperate. That's basically the exact opposite of strong-arming.