Inter have made losses of nearly €1 Billion over the last decade, and still are making them. From 2006 to 2009 they lost over €500m alone.
Remember there are FFP rules from this season, something Moratti always talks about, so he will not be able to just put his hand in his pocket whenever he wants. He has also been loath to do that in recent years anyway. Last season they spent about €40m and sold players worth around €45m. The year before they spent around €40m and sold around €70m worth. The year before that they spent around €80m and sold around €100m worth. Inter also have lost at least €35m from not being in the CL this season.
So when I talk of 'budget', that is the money the club has to spend before they make any sales. If Inter have to sell Sneijder or add in 2-3 players to buy Lavezzi it is hardly representative of them having a significant market budget.