What if, instead of 'subscribing' for $10, you purchase a grain of sand for $10.
The grain of sand is available for collection from somewhere, doesn't matter where because nobody would bother to collect it. Your physical purchase comes with free access to digital content.
Its funny, because this is the exact opposite of how some cannabis dispensaries operate in Washington DC. It is illegal to sell cannabis there, but not to posses or to gift it. So you buy a $50 QR code that lets you access "digital art", and they give you a free 1/8 of cannabis with your purchase as a "gift".
This is the old eBay shipping trick. Ebay charged vendors a percentage of the product sale price, but nothing on shipping. So I'd often buy posters for $0.99 with $14.99 shipping (US Media Mail shipping was a lot lower than that).
The point is that since they keep broadening what they do want 30% of, we expect the next thing they'll do is removing the exception for physical goods.