Earlier quoted context omitted.
At that time (before GPGPU become big for such purposes) scientists used PS3s to build cheap (much cheaper than IBM's server offerings containing a Cell processors) computing cluster for HPC. These PS3 computation clusters are were hard to program, but if you managed it, they were really fast (for their time).
Yeah I hear ya. Think the air force also used it. Lets put aside the fact that Sony was probably unhappy that their loss leader console was being used in this manner(they did release the feature so maybe they could justify the PR bonus of supporting our troops or something). All these researchers probably had no need to upgrade their firmware once they got set up since (correct me if im wrong) no firmware update actu…
At that time the respective scientists were quite concerned not to accidentally install this firmware update, and whether Sony would invent more draconian measures to disable consoles with old firmware.
This lead to a huge distrust in Sony, and accelerated the switch from the Cell to the emerging GPGPU technology for respective scientific calculation. Thus, this was some PR disaster for Sony.