The Nerazzurri supremo stated that he did not overlook the club's needs when the star duo left San Siro, but conceded that he may have done some wrong decisions
The Cameroonian striker signed for Anzhi Makhachkala last summer in a deal reportedly worth 28 million euros, while Motta joined Paris Saint-Germain in January for 10 million euros.
Inter's transactions in the transfer market has been the subject of much criticism as the club sits fifth in the Serie A table, but Moratti stressed that the club was helpless in preventing the duo from leaving.
"I think I am an Inter fan and if some players left, it is because the conditions to keep them were no longer there," Moratti told Corriere della Sera.
"Nothing was done accidentally or superficially, we always considered the needs of that particular moment."
The Inter supremo then admitted that his side may have taken some wrong turns, but noted that the fans' unhappiness is explained by the club's success in the last few seasons.
"It is possible that we have made some wrong decisions," Moratti explained. "But I do not think we made many errors, or even serious ones.
"The problem is that we had become too well-accustomed: in the last years we found players who were able to quickly enter the mechanism of the team.
"Football is not maths and strategies, as a renewal which seemed correct sometimes do not deliver the results that you wanted."