This is going to end up like windows, apple and other operating systems. You don't have to run windows or IOS, but it sure makes a lot of things much easier. Plug and play, configuration, updates ect... If this is truly such a huge deal, someone is going to come up with an open source answer to the problem; Linux for tractors if you will. When that happens you'll have 100% full access and ownership. What you'll give up is support and ease of use from a company that has put billions into R&D to make the software work. We have the same thing in the auto industry; Megasquirt and several others give you 100% access and control of the software, however when you switch you are on your own. Theres numerous user groups for MS users, but theres a ton of stories about the guy who switched and now he cant get his project running. MHO is the convenience and efficiency that everyone wants wont come from open source. There's a cost to that and its ownership and access.