The majority of those changes aren't visible to users. As a corporate developer, I can tell you that it's extremely hard to get funding to make even the most ne

The majority of those changes aren't visible to users. As a corporate developer, I can tell you that it's extremely hard to get funding to make even the most necessary technical changes to an existing piece of software. Normally, the best you can do is sneak it in with a big redesign that has features worth paying for.