Has anyone brought up the collateral damage all of this would have cost? Loss of life of course, loss of a manufacturing facility, ok, total loss of a technology, questionable at best.
What company that can supply military hardware would put all its knowledge of building, and manufacturing of said equipment in one place? None. Just look at the list of known manufactures in BT. Some of these companies are from the 19th Century.
That main facilities were destroyed is viable, but wouldn’t the people attacking at least try to make sure that they have the pertinent knowledge of this technology before they destroy it. Of course that would not always be possible but not once have I read where a certain House had been able to keep the knowledge and manufacturing capabilities of Star League era equipment.
On a smaller scale one could look to WWII as Russia moved a major portion of their war manufacturing capabilities east before the Germans onslaught. Then were able to rebuild their industrial base.
Last of my points: It was not the SLDF that built the weapons of war; they paid manufactures to do everything for them. The SLDF could never have stayed ahead of the Great Houses without the trick of making all of the Houses believe in the Star League and all that is involved in such a political base. The manufacturing was developed, tested, and produced within the Great Houses sphere of influence. But not one of the Great Houses was able to capture or retain information or the ability to build say a targeting computer that worked with the advanced nero-helmet of the MechWarriors.
Ok just to show that I am not totally negative on this point and that I can understand the Star League would do its best to make sure that the technology they have is secret and only to be used by them. Also that they would do their best to make sure as little as possible was left when they left on the Exodus. As they did with the data cores also that they would take as much with them such as specialty products such as crystals, focusing lens, etc. which would cause a major supply issue. Possibly the Star League made sure a majority of their equipment was developed from different House areas and only assembled in certain areas. You know like; “made in the USA†products are sold today. This would not be cost efficient but could help in many other ways.
The Star League Core is gone and a copy not to be found for many years, and who is to say it is an original copy and not a placed duplicate. Still that all but a few morsels were left behind seems a bit much. Still this is fiction and one cannot drag ones self up by the boot straps if everything is handed to one on a silver plater