We've seen this story before. It's as old as cross-platform software development tools.

A platform vendor buys and kills closed source code that makes it faster and easier to make applications across platforms including those the new owner does not control, so the closed source product is killed and all the developers who used it now have to re-write all the their apps costing them significant resources and money.

Can anyone really wonder why developers do not like to buy closed code that acts as glue between platforms and their applications?

The only time it's smart to do is if it lets you reach the market faster than others, and then only if that buys you time to get off the cross-platform tool before it lags and degrades in the face of platform updates the tool vendor does not control or dies.