Explains how ServiceNow can be so popular yet so awful. They sell to the IT department who staffs up a team of solution architects and lock themselves in.
Usability of the software be dammed (it took years before even urls were shareable).
Slack was a revelation where its pricing model encouraged bottoms up adoption (only pay for seats used) and they encourage feedback from everyone (unlike Google docs where it takes an admin to report a bug, maybe).