The Bianconeri director believes his side's defeat by Bayern Munich has underlined just how far they have fallen behind Europe's elite
The Bianconeri reached the quarter-finals of this years competition but were thoroughly outclassed during both legs of a 4-0 aggregate defeat by Bayern Munich.
Marotta believes that the games clearly illustrated just how far Italy's finest have fallen behind Europe's top clubs in recent years.
"It's time in which you have to work with what you have," the 56-year-old told Tuttosport.
"At this moment, I do not see any prospect of victory for an Italian team in the Champions League for many years to come.
"We can not do any more work than we are currently doing: I think the car is moving at full throttle!
"The problem is that Real Madrid, Bayern Munich, Barcelona, [Manchester] United and [Manchester] City are economic superpowers, with revenues and budgets of €450 million.
"From this point of view I think that society is moving in an important way: the fact that we built the stadium shows that we are moving 360 degrees.
"But, I repeat, it takes patience."
Juventus may have bowed out of Europe in midweek but they can solidify their stranglehold on a second successive Scudetto with a win over Lazio on Monday.