This exactly supports my point. There was no artful or skillful "maneuvering" on Dropbox's part. They made an offer and negotiated a purchase that was amenable to both parties.
Had this been a hostile takeover or had Dropbox forced them to sell "snare" would indeed be applicable. However the Dropbox relationship was one Hellosign unequivocally stated they were "thrilled" about as far back as last November:
transitive verb
1b : to win or attain by artful or skillful maneuvers