How do you imagine they are "raising the price simply because they can" when their growth has slowed[1] and they have decided to no longer use debt in order to finance content?[2] I think those two facts taken together are a much more plausible explanation of why they are raising prices i.e because they have to. Further given the competitive head-winds they're now facing streaming space they are definitely not in position of price leadership.

[1] https://www.marketwatch.com/story/as-netflix-growth-slows-st...

[2] https://www.nytimes.com/2021/01/19/business/netflix-earnings...