That's rich considering Gitlab is basically a Github clone.
For quite a while github looked like a cheap gitlab knock off rather than the other way around due to gitlab actually innovating and adding new features and github stagnating.
Now that github is adding the features that gitlab already added, they are more neck and neck again.
Gitlab is a dying product.
If it's dying why would GitHub implement their features? Do they want to die too?
It's called "inheritance". It's an OOP concept, you functional kids won't understand.
... How? If anything, Gitlab seems to have grown a lot recently. As far as I can tell, the competition with Gitlab is one of the main reasons GitHub has started releasing so many features (many of which Gitlab had first).