Longer answer - sort of but not that simple in our current state. Even if you absolutely love a product, often times you don't buy again. Many reasons for this - it's a pain to checkout again, you don't have your credit card on you, you forgot about it, you're just too busy with other stuff.
If we had an Uber-like app - one click to order, saves your credit card, sends you push notifications to remind you - it would be a lot more feasible to send you a single cup of coffee and make it really really easy for you to buy again. Unfortunately, it's hard for us to do that right now and we end up losing a lot of people who truly did love the product.
Before LTV or any of that stuff - the big question is if we call up our subscribers, are they happy? We hear again and again "Yes, I love the product, I love that it shows up, it tastes great and saves me time". We would not be building a subscription service if that were not the case.
However, we are absolutely testing different trial options to get at what you're talking about.