I worked at Rackspace from 2010 to 2014, and left on very good terms. I know many people who stayed well after I did. Private Equity killed Rackspace. They had a great product, a great team, a healthy war chest, and a good business with good margins.
They were purchased by Private Equity which took a $5B company and turned it into a $1B company, after laying off all the US-based staff, sending all the support jobs to India, destroying the brand, ruining their most innovative product offers, and loading the company up with unnecessary debt.
I saw the writing on the wall, which is why I left just a few scant months prior to the buy-out. I still wish it hadn't happened. Rackspace (of that era) was the best place I ever worked in my entire career, and I still remain close friends with many of my former coworkers. I grew immensely as a technologist and a person through my time at Rackspace, and I learned to love customers and love supporting customers in a way I never thought possible having done my time earlier in my life in retail. Rackspace was something really unique and it's sad to see what's happened to it due to greed and stupidity from the shareholders and the PE firm that bought it.
One of the coolest things that happened to me was being on third-shift near the end of my shift the same morning that Lanham appeared on a talk show as he did sometimes. As he always would, he'd get them to live-dial Rackspace Support from the number on the website. At the time, Rackspace did not use phone trees or first-line, everyone was in the queue to take calls off the main number and transfer if needed. I picked up the phone on the 2nd ring (he always said, and it was true, you'd get a /real person/ with /real knowledge/ in less than 3 rings) and suddenly was talking to the CEO on air. Was super cool and a good way to the end the shift.
To go from that level of support, to get an extremely senior sys-admin (I was one of several people at Rackspace that was a "double L3" during my time there, reaching seniority in both Windows & Linux systems administration), within 3 rings, who can just solve your problem, even at 2AM, to what they have now getting stuck in phone-tree hell before being transferred to a time-waster with a script in India who'll eventually hang up on you is truly horribly sad. Private Equity has ruined SO MUCH value in the American economy, and it isn't a new phenomenon.