In the mainframe world, contracts state that if I go out and...

In the mainframe world, contracts state that if I go out and trade my IBM mainframe for one that's twice as fast, then I have to go back to the vendor of the software and pay more money, ... Companies like BMC and CA have done very nicely over the last 10 years, and certainly over the last 5 years, when MIPS growth was just outrageous.