All closed systems of any significant value will be reverse engineered eventually
While writing that tweet, I remembered a conversation I had with @rasmus a long time ago at foss.in where he said he prefered a BSD license for PHP over GPL, because they could easily replicate any significant proprietary/closed changes that businesses might make.
That's when it struck me: Any idea that becomes significant, can easily be implemented. It's coming up with a good idea in the first place that's hard.
