The reason is complacency. For a long time, Flash was the king of its niche, so they didn't bother to make it perform better on systems other than Windows. Adob

The reason is complacency. For a long time, Flash was the king of its niche, so they didn't bother to make it perform better on systems other than Windows. Adobe needs a kick in the pants. It's the same way with Acrobat Reader. How many people use alternative PDF readers? Bear in mind that HN is a very biased sample.