Like the OP said, if you restore it you will lose money.
Putting it back together to get it running will also likely be a loss.
BUT, look at it this way:
You will learn skills to repair and keep up your next machine.
You will have a game to play and enjoy.
You will have the satisfaction of fixing something.
You will have something cool that when people come to your house they will want to talk about it and play it.
You will save a piece of history.
You will be able to sell it and it will continue to be enjoyed.
All priceless and all good reasons to get it going. It is why I do not keep track of the money I spend on restorations.
If you are doing it for profit get out now before the addiction sets in.