Well, 3 years ago the majors went through a well documented buying binge because they were flush after the price advance of gold. Also well documented is the fact that they over paid for those properties. The market voted with their feet and sold off the majors that over paid. Big names generating great revenue streams lost half their value. Some still haven't recovered. They are not repeating that mistake anytime soon. So they are only buying juniors with measured and proven reserves. Or better yet are producing.
I wouldn't count on an early buyout of BBB. They don't even have indicated reserve numbers.