The parent is talking about developers, and especially those that might use the features in question.
What I'm seeking to clarify from the parent, is the data to support the premise that Windows, despite having upwards of 90% of the market share of the environment being discussed, somehow has a small share of developers compared to eg GNU/Linux (which has 2% of said market share among users). I'm skeptical of that extreme ratio falling so much between usage share and developer share, that it supports the parents position that IE's big problem is that it needs to be cross-platform.
What I'm seeking to clarify from the parent, is the data to support the premise that Windows, despite having upwards of 90% of the market share of the environment being discussed, somehow has a small share of developers compared to eg GNU/Linux (which has 2% of said market share among users). I'm skeptical of that extreme ratio falling so much between usage share and developer share, that it supports the parents position that IE's big problem is that it needs to be cross-platform.