Management. I spied an interesting twitter clip of Steve Jobs talking about how companies reward Sales/Marketing at the expense of Product people till the company is guided by people who have no idea what makes a successful product let alone how to built a product.
This "Institutional Product Rot” leads to poor decisions. A Summary is on twitter [0] but I found the original full length interview , “Steve Jobs Lost 1995 Interview” [1]
[0] “Jobs explaining Management/Sales & Markeing who don’t understand how to build Products” https://twitter.com/mikeabbink/status/1315876303455870978
[1] "Steve Jobs Lost 1995 Interview” https://www.youtube.com/watch?v=thxg1-iLRT8