Comment by bluGill
He wasn't acting alone. HP bought this whole company not long before this (HP bought Palm in April 2010, the 49 days seems to start around July 2011). Most of the blame for shipping 270,000 units that didn't sell has to go to Palm. Even if he correctly predicted that Palm wasn't going to sell that many (I'm not sure if that is possible), he wouldn't have been in power long enough to change things. Predicting the size of the market probably wasn't even his job.
I wouldn't even call this rushed to market, though expectations were likely too high for reality. Still it takes years of investment to build a platform like this.