Lets say I'm developing a new product. I allow people to pre-order the product and give them a time frame for release. All through the pre-order period people are able to cancel their orders and receive a full refund. Then, based on the length of time to put this product out, I decided to give it to customers in a working but not fully featured state. I contact every one of my customers and let them know that I'm giving them the product, it's not complete mind, but it's theirs and they can use it as they see fit. Also I'm allowing them to request refunds based on this new direction. Then, one year after I take this new direction, someone calls me up demanding a refund because they received my Early Access product a year ago but decided not to use it.
Again, it's nuanced, but I don't think the person asking for a refund so long after the time of the Early Access release is necessarily entitled to that refund.
This is, of course, in reference to TruthJunky. The guy in the OP deserves nothing. Early Access is inherently anti-consumer, people should be wary at any point in that process of giving anyone money.