It's so unfortunate they put their ego's aside and became friends so late in life. We could have had some action classics back in the day. I remember there was that one WWII movie Arnold was supposed to be involved in playing a defecting German soldier. Would have been cool to have Sly play an Allied soldier in that one.
Or a part of Sgt. Rock's Easy Company in that project Arnold never got off the ground. I think Escape Plan is a pretty solid movie and very remincient of those good early 90's action movies. If it had been released back then, it would have been such a huge blockbuster imo.