And they kill two birds with one stone. First, they support open source, which is great. Second, they increase conversion and loyal userbase. At my job I had a choice between Visual Studio + Resharper vs Rider, and I was reluctant to move from VS to IntelliJ IDEA based IDE, thinking R# is good enough and gives the same benefits inside a familiar IDE. I was so wrong, after trying Rider at home occasionally and pair coding at job, I gradually migrated. The IDE itself is much better, faster, nicer is big and very small details. Now there is no way back to VS, but that may not have happenned without the access at home. Other tools from the Toolbox are doing the same for other languages. Very smart of them to be so generous. Now even if my free pack is not renewed, I will pay for myself. And for foreseeable future I will generate at least one license at work for them.