1) Bundling 2) Network effects and 3) Who else is doing something different? No one cares about the quality of the product they make anymore. The only thing t

1) Bundling 2) Network effects and 3) Who else is doing something different? No one cares about the quality of the product they make anymore. The only thing that's important is pushing new features. Fixing old features is useless because by the time someone finds out the feature they chose you for doesn't work, they've already paid you for a year long contract. And most of the time, by the time the year rolls around, they're used to dealing with the problem and don't want to take the disruption of moving to something else again.