There are people who will spend well over $10,000 a year to fulfill their compulsion for their "chosen" game. The advice in the article is actually rather asinine unfortunately:
>"Game creators should begin to look at pushing more sales after install. Swrve suggests this should be done one month after the game has been downloaded. Another way to keep keen players coming back would be to reduce the privileges given in purchases so they will need to buy more to play more."
It's implying that game creators haven't been carefully playing the analytics game since before freemium was a word. Any of these proposed changes will typically have catastrophic effects on the casual user base which could reduce game popularity and then tank the whale usage (depending on how much the game depended on network affects). Freemium games face the problem that TV networks do, there's too much alternative content out there.
>"Although, perhaps restructuring or ditching the freemium model might be the safest bet."
This is the right answer if you want to make good games. Freemium is an excellent model to optimization profit but it typically is directly counter to what can be considered a "good" gaming experience. The freemium games that have been largely successful (Clash of Clans, Hearthstone, Candy Crush, etc.) were all successful because they were easy to play for free, this garnered more popularity, which brought in more "whales" to support their creators.
I see mobile gaming as a race to the bottom, the margins are razor thin for the company, the pay is mediocre for the employees (as well as growth opportunities). Occasionally King comes along and wins it for a year but there are hundreds of these companies out there and the odds aren't good for them.