Buzzy mattress maker Casper is pitching itself as a tech company, just like WeWork did. Here why business experts are dubious. (AAPL, FIT)

· Online mattress company Casper, which is set to go public this week, tried to pitch itself as a tech company to potential investors.
· Private stakeholders have given it a tech-like premium, valuing it at $1.1 billion.
· Public investors seem to have a different take on the company, potentially influenced by its...