Yes, your direct PSS (passenger service system) or CRS (customer reservation system) could also be run by one of those two. But they aren't yet threatening to

Yes, your direct PSS (passenger service system) or CRS (customer reservation system) could also be run by one of those two. But they aren't yet threatening to shut that down yet. So far, only the GDS bit is being turned off. There's speculation that what you're describing might happen.