As the article notes, it usually takes a series five years to get to 100+ episodes (assuming 20-24 episodes a season; cable shows typically have shorter seasons). In the meantime, if ratings go up, so do salaries.
Still, this is what's particularly interesting about the strategy:
[U]sing the "10/90" strategy, the channel aims to produce all of that content in as little as two years. If the strategy produces a hit, FX will get the equivalent of what it would get from a hit broadcast show. If it doesn't work, FX argues, the downside is limited because it gets a discount for ordering so many episodes at once.2 years? Sheesh, that means they're going to produce something like 45 episodes a year after the first season of 10 episodes. I know soap operas shoot very quickly, but I was under the impression that most prime time shows take about 8+ days to complete an episode (not counting the time to write the script). That's a pretty tight window to make 45 episodes, and doesn't give any break time.