Wall Street obviously has a hankering for Groupon to be purchased by another company, but the prospects of that happening don’t look bright. Sure, Groupon is cheap and has been cheap for a while now, and yes, it’s worth about $2.9 billion, has $1.2 billion in cash and owes merchants about $573 million. It’s a relatively affordable company with a customer base of 40 million consumers who purchased something in the past year, relationships with a horde of local merchants and a mobile business that’s faring better than expected. But Groupon’s operational stumbles make it less appealing. So as expectations for an acquisition of Groupon mount, AllThingsD takes a look at some scenarios with different buyers: Google, eBay Amazon, Visa, MasterCard, American Express, Yahoo, Microsoft and Facebook. (AllThingsD)