I always figured it was because they have to pay the 27 reps that call and email me monthly begging to set up a meeting because I looked up their service once several years ago and asked for pricing.
There's so much more expensive than the alternatives I really had no choice.
Oh, you went with Splunk, I see. Well, can I get a meeting with you to explain why we're so much better and you would be much happier with us.
No, I'm not going to reinitiate this working completed project and pay three times more for my data munging.