Short answer is MicroStrategy, Inc
Long Answer: Look around, why there is scarcity of MicroStrategy guys. There are very less number of clients. Less than 10K compared to 23K of Cognos and 45K of BO. I wouldn't compare to SAP BW, as that's the crappiest BI tool around, even worse than Oracle BI Discoverer or SQL Server 2005. Hyperion, the original BI tool, lost to late entrants.
Now who needs MicroStrategy. Not small companies. Usual license cost of MicroStrategy is around ~500K PLUS cost of support and kind of support (Bronze, Silver, Gold.. Upcming Diamond, Platinum and Crude oil -;. That's hell lot of money for even a big companies. The only and only reason I would ever support any company going for MicroStrategy is the the size of warehouse (back-end). BO and Cognos are known to get slow with bigger Warehouse where as back-end scalability of MicroStrategy is immense. MicroStrategy has better COE in long term over BO and Cognos. Learning curve of MicroStrategy is very steep.
This has infected the consulting companies with rotten MicroStrategy professionals. Even they (Companies and professionals) can't help it. People with zero or near zero MicroStrategy experience are working for MicroStrategy implementation of Fortune-100 companies. That's what I call gamble. For service based companies what matter is the billing and MicroStrategy gives them top dollars compared to other BI tool.
Now is the worst part. MicroStrategy education as well as certification are obscenity costly. Giving exams costs USD 650. Education is even costly. Getting a 2 week training and 3 certification will take some aback by USD 6500. Well, that makes finding a good MicroStrategy professional hard to come by. Search amazon and you won't find a single book on MicroStrategy, where as for other BI tools, you will find tons of books. MicroStrategy training the books are privileged one and unavailable outside.
Probably the companies buying MicroStrategy never factor out the cost of hiring a MicroStrategy professional (feeding him) and the time required to hire a suitable candidate. Else 50% companies who purchased MicroStrategy wouldn't have purchased it. Not only quality even quantity resource are hard to find. BTW, most of companies purchasing MicroStrategy get the initial setup and development done by MicroStrategy Inc itself at some USD 100+ per hour. As company MicroStrategy Inc has very much right to charge it but lack of reasonably charged good education (that implies in getting good guys to maintain a company's BI system) should defiantly deter or think thrice before purchasing MicroStrategy BI platform. There are more number of MicroStrategy implementation and development consultation in MicroStrategy Inc then rest of world; something that's not true in case of BO and Cognos. One should not take it as joke.
So as long as MicroStrategy Inc doesn't change its lookout for reasonable cost education, it is not so good picture for MicroStrategy Inc. Till then I can actually sit, relax on couch.