As for emulators, Platform Solutions developed a system that could run IBM mainframe Operating Systems and applications at a very competitive price. I recall t

As for emulators, Platform Solutions developed a system that could run IBM mainframe Operating Systems and applications at a very competitive price. I recall there was a middle layer of microcode such that the computer could run whichever instruction set you wanted. IBM smothered the lawsuit by buying Platform Solutions and persuaded various antitrust authorities to look the other way. https://applecon.com/case-studies/ibm-v-platform-solutions-and-t3-technologies/ https://applecon.com/case-studies/ibm-v-platform-solutions-a... Up to that point many ISVs were using mainframe emulators such as the Flex system, but that license was killed off and ISVs were either pushed to remoting to a mainframe or going to z/PDT.