That's because generally speaking, paying "market value" for long-term contracts usually results in an albatross for the team, as has been proven over and over and over and over again. The 70 million starting offer was low, but it was an initial offer, and what is "market value" for Lester? He's not an undisputed ace or #1. Let them work it out.
As for Lackey, seriously? He repaired his image last year. It's a ploy to get more money, nothing else. That public image BS means crap if they're making their dough.