Is your startup a company or just a feature?
sachin.posterous.com
sachin.posterous.com
As long at the developer retained more revenue than it cost to develop the product then it was a success. I don't care whether my startup is a 'company' or a 'feature' I care whether it makes money. If you can sell to another company just before your product becomes a commodity then that's even better.
Sounds like he's just jealous the IM Sense guys got a pay day for a $1 app.
Money Quote: "Surely their sales would drop to near zero since the feature is now free."
Better let the bottled water industry know they are about to be put out of business by the tap.
I consider myself an apple hater (or at least wanna-be hater), but I have to give credit where credit is due. There are some things, like design process, publicity control, and outright valuation where apple is almost undisputably the top dog (right now).