In a previous life, I did a lot of MS BI & SharePoint work. On the BI side MS was just starting a push into the BI world and was gaining quite a bit of traction

In a previous life, I did a lot of MS BI & SharePoint work. On the BI side MS was just starting a push into the BI world and was gaining quite a bit of traction. I've worked on huge MS BI implementations and you are correct there. A lot of large firms use it for their whole BI stack. On the SharePoint side of things, while I believe MS did oversell its capabilities, the problem was (could still be) that most places thought it was plug and play. It seriously wasn't. I don't know if things have gotten better but documentation those days was severely lacking. Add to that enterprises that were in the mindset that SharePoint was just another ASP .Net application and their in house devs could just pick it up without some sort of guidance. There were a bunch of places where I was brought in to clean up the mess that happened because of those two things. I'm not sure if the landscape has changed or not but SharePoint is a beast unto itself and I've personally seen it implemented well at 30k+ seat organizations and the largest I've done was 50k seat org across 3 continents. It's not cheap to set up or customize but when it is done correctly, it does work.