A group of 25 architectural design firms—including Zaha Hadid Architects, Grimshaw, and Stirk Harbour + Partners—that represents 5,000 paid seats and $22 million of spending from 2015 to 2019 on Autodesk Revit software, wrote a public letter to Autodesk CEO Andrew Anagnost dated July 27 asking for more development of the software and relaying concerns about its increasing cost of ownership.