This tired old trick is the same one Apple pulled off 20 years ago when they first released OSX, and which grocery retailers have been pulling off since the day

This tired old trick is the same one Apple pulled off 20 years ago when they first released OSX, and which grocery retailers have been pulling off since the day supermarkets were invented: dangle a nice, quasi-free product to get the customer into the shop where he becomes a captive audience and you can ram the rest of your inventory down their throat. Oooh, look, we're OpenSource now, OSX is Unix and the source code is available to all. This was a blatant lie by omission (omitting the giant pile of proprietary crap heaped on top of the FOSS layers) but it worked like a charm: tons of OSS devs drank the kool-aid switched to using Macs. Lo and behold, 20 years down the road, the Apple ecosystem is the most closed flytrap ever devised by an IT company. MSFT is pulling the exact same trick here: .NET is an integral part of the MSFT ecosystem, most of which is completely closed. Don't be fooled. Don't drink the kool-aid.