I agree with you. Both IBM and Sun have some really amazing R&D and almost all technological stacks in both companies can be merged and benefit (unless IBM kills all of Suns product lines - which it won't). DB2 <-> MySQL, IBM processors <-> Sun processors, Sun brings Workstations in the IBM house once again, Storage systems also, etc..

What I'm sad about is that the third pillar of once paragon of high performance computing is falling down. First DEC, then SGI and now SUN. I miss those magical times.