True; throught a SaaS model a cloud company could make extensive changes to Linux and deploy it to their datacenter on which their services are sold, but withou

True; throught a SaaS model a cloud company could make extensive changes to Linux and deploy it to their datacenter on which their services are sold, but without the obligation to give back any of the code because they haven't distributed the code. I'm not saying this is actually happening, and experience with companies who build on FreeBSD show that upstreaming their changes helps keep the diffs small when pulling down updates around their proprietary code.