The Bianconeri director was left frustrated with the difference in class between his side and Bayern, but was pleased with their European campaign
The Serie A champions were beaten 2-0 in Wednesday's return in Turin after previously losing the first leg by the same scoreline, and Marotta feels there is a big gap between Italian football and the game in other countries.
"Unfortunately, there is currently a gap between football in Italy and other countries," Juve's general director was quoted as saying on the club's official website.
"Just look at Bayern, they had double the turnover of any Italian team. It’s impossible for us to spend €40 million [34.1m] on players at the moment. We know we have to grow and improve, and we’ll work towards that."
Nevertheless, Marotta was pleased with Juventus' performances in Europe this campaign.
"This new management only took over in 2010, so we would have happily settled for being in the Champions League quarter-finals and playing against a great team like Bayern," he continued.
"It’s been an important experience for us, so the thanks of the entire club goes to Antonio Conte and his team."