How did we know that we will be back to our best soon? After the season was over, it took a drama to get us Capello, should I mention the Emerson saga? We bought Olivera and Kapo. I am sure we got a few typical Moggi crap as well. It was all down until the last day of the transfer season where we snatched Cannavaro and Zlatan where we looked like going back to our best. And some questioned these last two transfers as Cannavaro was past his best with Inter and Zlatan is not liked by many.
By "soon" i don't necessarly mean "in one single season". Afterall, even in season 2004/05 the difference between success and failure was one single serie A match played 3 rounds before the end at San Siro, won by that famous Trez's header.
But we were one of the top5 or top3 richest teams in the world and we had 7 world class players, 5 of which are still in Juve, but 5 years older compared to the summer of 2004. The chances were huge that we won't keep winning the 3rd place in serie A, far behind the serie A winners, and out of all the other competitions in early spring. We knew that we were 1 or 2 players away from being a hot serie A favorite and a very competetive team in CL (the second was proven wrong though)
Now, for a variety of reasons (some will say: the board's incompetence, while others will use our financial situation, the age of our star players or Calciopoli as the main reason), we can't have the guarantees that in a matter of year or two we'll be a force in Italy again, and even less a force in Europe.