Ottawa is offering a bag to DBC as well, if he was playing in a location he wanted, he'd be signed. I can only assume all of Sorokin, Meier, Dubois and Bratt are happy in their locations as well, and happy to take the 70 mill contracts. If they were sitting in a place they didn't want to be, a deal likely isn't reached either.
TSN ranked the UFA class, their #1, 2, and 3 guys signed for a total of 4 years between them. Orlov was the #1 UFA this off-seasosn, took a 2 year deal. Bertuzzi, who was the #2 UFA this offseason on TSN, took a 1 year deal, and his agent said there were long-term offers available, but the 1 year deal made the most sense financially for his client. Zucker took a 1 year deal, undoubtedly had multiple 3ish year offers.
For some, short term makes a lot of sense. Guys like Dubois, Meier, Sorokin who have teams tossing them UFA money in a place they want to be already makes it pretty easy. Right now, DBC is sitting in a place he doesn't want to be, who are apparently offering a bag. He is a year from UFA, and unless something changes and a place he wants to be offers him what he would consider a fair contract, it's looking like he's viewing next year at UFA as a smart move, albiet risky