[dbrian]

Starbucks has been doing well selling $5 coffee. I don't think the cupcake market will ever be that size, but there is plenty of room for companies like https://www.heycupcake.com/.

[wavefunction]

Coffee also has the advantage of a habit-forming substance.

[Samuel_Michon]

I'd say sugar qualifies.

http://en.wikipedia.org/wiki/Sugar_addiction