The source you posted requires a subscription for anything but a summary of major league sports total revenues, and that listed is for 2015 not last or this year. So you still need to back up your claim of rising revenues for the current year.
The only item of interest your source shows outside the pay wall is that in 2015 “regular season ticketing” was 16.45% of revenue (”gate receipts,” so doesn’t include stadium concessions and other sales that are impacted by attendance). I think we can all agree that those numbers were not going up over past two years and will decline even further next year as season ticket holders don’t renew and teams lower prices to try to incentivize sales.
Well that is weird, I swear yesterday I clicked on that site multiple times on multiple machines and never got that subscription thing. Maybe they decided it was popular and “moved” it. Anyway the meat of it is a chart showing NFL revenues from 2005 through 2016, it was 6.16 billion in 2005, climbing constantly to 12.16 billion in 2015 (last year with no boycott) and then hitting 13.16 in 2016. Here’s a more meat and potatoes story on last year’s revenue (including that the profit was 7.8 billion, over 50% profit makes for a lot of wiggle room):
https://www.cbssports.com/nfl/news/packers-disclosure-shows-nfl-teams-split-a-record-7-8b-in-national-revenue-in-2016/
Ticket revenue probably did go up over the last two years, prices go up, that’s life. We’ll see when season ticket sales hit, but I doubt anybody is lowering prices. One of the nice parts about being in big cities with large extended metro areas is even if you lose some folks there’s always somebody else. They only need about 70,000 people, not that tough in areas with multiple millions.