Napoli are still top of the table with 41 points after 16 games but their advantage over second-placed AC Milan, who beat Salernitana 2-1, narrowed to five points.
Of the big five leagues, only the Premier League saw an increase in clubs' cumulative operating profits, up from 49 million pounds to 479 million.
Inter struggled considerably in the first half against an Empoli side who have won just once in their last 20 games.
An AC Milan spokesperson said only that "AC Milan remains focused on improving its performance on the pitch and to develop the club."
AC Milan slipped up for the second time in as many weeks on Friday with a 1-1 draw with Udinese which gave their Serie A title rivals a chance to reach them at the summit.
The champions are on an unstoppable run of league form, winning their last five games without conceding a goal and going ten matches without defeat.
Simone Inzaghi’s side are third with 24 points, four behind leaders Napoli and second-placed AC Milan, who face Salernitana and AS Roma respectively later on Sunday.
Inzaghi takes defending Serie A champions Inter Milan to former club Lazio this weekend.
Allegri's side took down the European champions with a disciplined performance that sucked the life out of the Blues.
The two-time Champions League winner's arrival came like a bolt from the blue for Roma's trophy-starved supporters.
The Middle East and North Africa (MENA) region is the main TV international package still to be awarded by Serie A ahead of the season start.
Romelu Lukaku said he will remain at Inter Milan next season after the Belgium forward helped them to their first Serie A title in 11 years.
Pirlo was appointed last year with no previous coaching experience and could only lead reigning Serie A champions Juventus to fourth place this season.
Just three points separate second-placed Atalanta and Juventus in fifth with two games left to play.
Zlatan Ibrahimovic is close to renewing his contract with AC Milan, club director Paolo Maldini announced.
Ronaldo was named Serie A's Player of the Year for the 2019-20 season at the Gran Gala del Calcio on Friday.
Italy's Juventus said on Thursday it would close its 2020-2021 financial year with a loss.
Ibrahimovic joined Milan in December 2019, and signed a one-year extension last summer to carry on in Serie A for another season in 2020-21
Italy’s top flight soccer league Serie A aims to raise at least 1.15 billion euros ($1.4 billion) per season over the next three years.
Fans streamed to Napoli stadium on Thursday to pay their respects to Diego Armando Maradona, grieving a man who achieved god-like status in the Italian city.