Engineers and designers and PMs are so smart and experienced and so eager to show each other how good at their job they are.

Thorough, complex, expansive feature sets are where those skillsets can shine; no glory in building something simple, to the point, and limited in scope.

Most products suck because people just cannot help themselves. It takes insane focus and control to override those tendencies when hundreds or thousands of people are working on a product (miss you Steve).