You are talking about a company that simply doesn't have the production capacity to produce large aircraft any more, and the updating of a 50 year old design.
Now while I havn't been to Palmdale this year, the plant that used to assemble the L-1011 was still there and still owned by Lockheed Martin last summer. The 'back shops" that were in Burbank are gone, but most of their capibility has been moved to the new buildings that have been erected just east of the L-1011 final assembly building (601). The flight test hangar (building 602) is still there as is the paint shop.
Additionally, the Lockheed Martin Marietta plant has been undergoing a large expansion and since they managed to build C-5's and C-130's, and C-141's, C-130's and JetStars, F-22's C-130's and P-3's simultaneously there would be more than enough room for a commercial airliner.
Oh yes, the Lockheed Martin plant in Fort Worth, that was where the B-36 was built?