The problem (surprise!) is IBM. It's mature software, which means 21st Century Desperate IBM sees it as a cash cow - aggressively squeezing customers - and as something they can let their senior, expensive developers move on from - or lay them off in favor of "rightsourcing". You can certainly trust your data to it (unlike Lustre), but it'll be very expensive, especially on an ongoing basis, and the support team isn't going to know more than you by then. Also expect surprise visits from IBM licensing ninja squads looking for violations of the complex terms, which they will find.
As for Lustre, it brings to mind Oliver Wendell Holmes, Jr's, "Three generations of imbeciles are enough". I've been at least peripherally involved with it since 1999, with LLNL trying to strong-arm storage vendors into support. Someone should write a book following 16 years of the tangled Lustre trail from LLNL/CMU/CFS -> Sun -> Oracle -> WhamCloud -> OpenSFS -> ClusterStor -> Xyratex -> Seagate -> Intel (and probably ISIS too).
The answer to your question IHMO, is that Intel just isn't that smart. They're basically a PR firm with a good fab in the basement. What do they know about storage or so many other things? People don't remember when they tried to corner the web serving market back during the 1st Internet boom. They fail a lot, but until now had enough of a cash torrent coming that it didn't matter. They still do, of course, but there are inklings of an ebb.