Re: Evernote has been pushing users heavily towards ... $69.99 per year
Trying to charge customers with such a subscription may be very dangerous when your application/service can be cloned easily enough and offered in another product.
Adobe's subscription may work, but because Adobe has little or no competition for its products, especially at the semi-pro and pro level, and there's little chances such features will appear in other products soon.
It may really get uncomfortable to have to pay for many subscription, especially for less used product, even if the overall expense may not be high. Subscription can make companies happy, but customers may be not so keen on them.