Yes, "win now" and "in the future" are not mutually exclusive. Ask the Patriots.
Of course, easier said than done, but you can't "win now" by just buying ever FA on the market ala the Redskins, nor can you exclusively win "in the future" by not signing any FA's and just going with a bunch of rookie draft picks. The Patriots seem to realize the latter this year, if their FA spending spree is any indication.