The situation has some paradoxes. The SSPX actually stands to lose a great deal, materially and spiritually, by being assimilated through compromise into the political structure under Benedict. On the other hand, the Pope stands to lose credibility and money in the plate, in the eyes of traditional (true) Catholics if he does not overtly accept Tradition and starts a return to Orthodoxy and Orthopraxis. On the other hand, the Pope would anger the Masons and the Jєωs if he gave into SSPX, which (if he is not truly a man of faith) would sway him more strongly, since his physical safety depends on not offending certain groups.
So the SSPX is actually in a position of strength in these negotiations, but places itself in a position of weakness by accepting Benedict's authority. It also has weakened itself by not defending Bishop Williamson, because it has shown that it is prepared to make sacrifices (even one of a Bishop) at the altar of Zionism.
Successive Popes have committed outrageous and scandalous public acts against the Faith, including Benedict XVI. The modern Catholic Church is riddled with sɛҳuąƖ scandal, financial corruption, and the systematic weeding out of Catholic seminarians who are against Modernism. How the SSPX hopes to survive if it is regularized is hard to comprehend, except if it does not compromise on faith and morals. If the Society does give in, then in my eyes it ceases to be the hope for the future, but merely a temporary source of valid sacraments until the inevitable disappearance of Tradition from the visible Church - and what then?