I would own one, but everything for it is too damn expensive, and the games don't warrant the cost. Splatterhouse on it goes for stupid prices, and I can buy the actual arcade board for as much as it sells for, if not cheaper.
As for the games, depending on the model, some were on CD, others diskette. Essentially it is a consolized PC.
Dare I say it reminds me of a consolized version of the X68000 PC, in terms of collectability and software prices.