Comment by mercer

While I could see how it can be done in a way that isn't outright unethical, it still strikes me as 'wrong' in the sense that it betrays my expectations of how open source works and relates to for-profit endeavors.

There's no implementation I can think of where I wouldn't feel icky about this, even if the 'Kite update' did absolutely nothing without turning it on explicitly through some setting that I actively have to look for (so no 'would you like to opt-in' screen' at all).