Is there any doubt but that this is _the_ motivating factor for these companies? They employ all sorts of dark patterns to charge customers on the sly and make cancelling recurring payments as difficult and painful as possible, but at least if they want to sell on the lucrative iOS market they can't do this at the moment.
This is their business model, they've already shown they'll stop at nothing to put these practices in place, obviously this is just the next step in pushing it further.