Yeah, I started in the architecture industry and it's wild how much every company pays Autodesk in licensing fees, every year, for extremely little improvement to Revit (their architecture software).

For a mid sized company (~500 people), I think we were paying them like a full staff software engineer's salary in licensing fees every year.. and there are dozens of them in every country, let alone major firms, independent shop, contractors etc.

Really felt like the industry would benefit from open source CAD software that was collectively developed, but it's not quick or easy to build CAD software that works flawlessly at scale and no single firm has ever had enough up front capital to fund the development of something that could compete. Plus once you collaborate with other architecture and engineering and planning firma, you now need to exchange files and standards (or better yet work together real time), and now you need a solution that can work for everyone.