Cynically speaking (tongue-in-cheek), shouldn't creative types and artists be happy about exhorbitant price inflation of artworks? My wife is a painter and she'd love it if the value of her works sky-rocketed. And so would I.
There's one problem with that. We live in a world where the present definition of "art" is rather fuzzy. Some people think $1.7M is a reasonable price for this work, while others (perhaps including myself) would charge its owner to haul it off to the dump, had they not been told it was an impressive feat of artistic brilliance with a significant dollar value attached. In fact, some might charge more than a typical matures disposal fee, due to the known presence of potentially dangerous bio waste.
You can't make the big bucks now unless your work elicits such diverse reactions. Does your wife paint things that offend large numbers of laymen deeply? If not, sadly, this type of price is probably out of reach for her for now.