Re: The real story here
That was my take away from this article as well. First time i've seen it happen.
30% does seem like extortion but the tricky thing I find with all this (play store as well) is they did basically make it the cost of using/selling things on their store. Most retail sales wholesale price is 50-70% of the retail price, if you remember what a retail store was.
As already stated by others Android doesn't lock you in so yea it's leaning on monopoly in that case. I just feel a bit 50/50 on it all even more tricky with the whole digital/physical purchase distinction.