I wouldn't say QNX is waning... It's used in trains, nuclear power stations, cars, embedded systems etc. If anything, QNX is a good counter-example to your argu

I wouldn't say QNX is waning... It's used in trains, nuclear power stations, cars, embedded systems etc. If anything, QNX is a good counter-example to your argument because it's one of the few really successful microkernels out there. edit: a broader list of where QNX is used: http://www.qnx.com/company/30ways/ http://www.qnx.com/company/30ways/