You cant just multiply revenue. A large part of revenue cames from marketpool tv rights so unless Seria A gets reduced to 12 teams and you still have the same marketpool you wouldent get revenues like that. The same goes for sponsordeals and matchday revenue.
This isn't perfect, but in 2012-2013...

Ultimately, the largest teams teams earn more based on a number of factors, and many of those factors would be amplified with consolidation. Furthermore, many of those teams would consistently make the UCL.
According to some website I found, this is how rights are distributed:
s per the new deal, current Champions can pocket 122.8 million euros per season, last season they earn 91.3 million euros as the highest earner of the Serie A. While the bottom of the table Sassuolo received 20.8 million euros as the lowest earner of Serie A.
Serie A Prize Money 2015-16 Fund Breakdown:
Unlike Premier League where prize money is distributed at the end of Season, in Serie A the total Prize money is determined at the start of the season primarily based on the historic information.
Here is the complete breakdown how Prize money is split in Serie A:
Prize money of Serie A is divided into five parts;
Equal Share:
Much like Premier League, each club gets the equal share of the prize money, which makes 40% of total prize money. Each Club receives 16.2€ million on the fixed bases.
Supporters Index:
It contains the 25% of Prize money. The Supporters index is determined by three different Italian research companies. The poll is conducted to determine where Italians are football enthusiast and which team they support and prize money is distributed completely based on the information received from them.
Town Population:
Serie A prize money also distributed on the province size. The A.S Roma earns 7€ million more than any other team while both Juventus and Torino receive the same as Clubs is based in Turin. Siena and Chievo just earn €600,000.
Last Season Performance:
5% of Prize money is distributed according to team finishing position in last season.
Last Five Season Performance:
15% of prize is allocated based on the club League position for last five Seasons.
Historical Result:
10% of the prize money is given to Clubs based on their League placing since 1946.
So a good proportion is directly linked to scale, and the part that isn't would certainly be offset by better economies of scale on gate receipts etc. Economically, it would make a ton of sense, but would never happen.
As for the EPL, London metro population is 13 million vs. Milan/Rome at 5 & 4 million. Part of the EPL's advantage is its superior international recognition, and the relative strength of the UK's economy. That being said, London can really support 3 huge teams, and 1 mid table team right now, which is ~3.5 million people per club. Roma comparatively has 2 million per club, in a city that currently is less affluent than London.
If Serie A was still the standard for international football, it probably could support more teams in big cities, but since it isn't anymore, the league is saddled with debt, and the domestic economy is stagnant, the league should adapt. If 2 teams are no longer viable, M&A is the prudent action. But as I said, it would never happen.
But it is truly baffling that Verona & Genoa have two teams. It makes no financial sense.
