Too bad you're mistaken.
He prefers spending the money on the golly-gee-whiz-bang computer stuff instead.
Notice that we're not fighting a large industrialized nation-state?
(I seem to recall debates about him wanting to defend satellites from terrorist attacks. It seems kind of bizarre in retrospect.)
During the late 1980s and early 1990s, we found out that communications satellites could be jammed and reconnaisance satellites at least partially blinded with techniques that Achmed the Awful could develop with modest amounts of money. It took a fair amount of money to cure these problems.
Klintoon was very heavy into the social engineering, but I still think it was Rummy who changed the hardware priorities back when he worked for Papa Bush.
The only defense-related post Rumsfeld held during the first Bush Administration was as a member of the National Defense University's Board of Visitors, not exactly a powerhouse of defense policy-making.