- There are about 1 million households in LA (3M+ population but 3 people per household in LA County)[1]
- Assuming the vendor got 75% sign-up for the free tier, that's 750K households
- I'll give them a generous freemium-to-paid conversion rate of 10% (sorry but 5Mbs is fine for many people). That's 75K households.
- I'll be generous and say that most paid households will get some kind of bundle and pay $150/month
MONTHLY HOUSEHOLD REVENUE: $11,250,000
- There are 250K non-farm businesses in LA County. I'm not sure how many are in the city limits, but let's say 25K buy a paid. Since we know ISPs love to gouge offices with higher prices for the same service, let's say they get $250/mo from each business.
MONTHLY BIZ REVENUE: $6,250,000
- Quick search puts Comcast's ad revenue is about 4% of total (Charter is 5%). So I'll throw in an extra $1M/MO in ad revenue from this deal, which I think is generous.
TOTAL: $18.5M/MO
TIME TO RECOUP $5B: 270 Months (22.5 years)
[1]http://quickfacts.census.gov/qfd/states/06/06037.html
EDIT: Updated with ad revenue numbers