The government kind of stepped up: the Innovation Network Corporation of Japan [0], a fund backed by the government, offered ¥300B cash and a ¥200B credit line [1]. Not as much as Foxconn was offering, so I guess that's why they didn't take it.
[0] https://en.wikipedia.org/wiki/INCJ [1] http://asia.nikkei.com/Business/Deals/Sharp-accepts-Hon-Hai-...