So would people pay that? I don't know. But it would be the sort of math you would go through evaluating that deal.
To evaluate the server deal you have to look at how many units you think you are going to ship, what your COGS are on them, and your gross margin. You can't really give someone 'free server' for a year because you have money sunk into building it and shipping it.
Further your revenue probably doesn't change if 100 people use a server or 1000 people do.
My point remains that it is not possible to compare 'goods' economy companies with 'info' economy companies.
[1] [Edit: added the RPM rates] Conversely, in advertising terms with 400M snaps per day you would need a RPM of $2.50 to generate $360M/year in revenues.
An RPM of $2.50 is also equally unrealistic for an audience of the mostly non-credit-card holding teen demographic, even more so when they're looking at the autoexpiring content for mere seconds before moving onto reply. Not only that but I'd bet a lot of those snaps per day come from a small subset of the 10M users.
I know. People would not pay that.
Common sense no longer applies here.
I'm not saying you are wrong, what I'm saying is that I can imagine how they would make it profitable should they need to.