But what is a standard? Either one company or multiple companies wanting to be interoperable with their software decide on a way to save data (communicate, what

But what is a standard? Either one company or multiple companies wanting to be interoperable with their software decide on a way to save data (communicate, whatever), so more people buy their software and use their prouducts. Adobe has an interest for more and more people to use PDFs because more people will then buy their products.. if they're afraid of the costs, don't publish the standard and risk people switching to other stanards.