I completely understand the point of your comment. My comment was on how yours was only tangential to the wording of the parent comment, which used the wording

I completely understand the point of your comment. My comment was on how yours was only tangential to the wording of the parent comment, which used the wording price of "admission". No-one is obliged to finish a game that they started, and the admission price to this particular game is nothing given that it's free, so there will not necessarily need to be any opportunity cost.