Comment by zamadatix

Apart from the first month don't forget those that subscribe and forget about it or subscribe for Netflix and use it for something else on top of those that cancel after the first period.

The 1 month period is also usually priced much higher anways. E.g. PIA is currently $11.95/m for 1 month, $39.96 for 1 year, and $79.17 for 3.25 years (instead of half a year @ monthly). With a curve that steep it's obvious they have severe retention issues at short intervals.