These businesses are most certainly NOT "on their way out". Office supplies is one of the largest categories in ecommerce. Staples and Office Depot are each doing billions in annual sales online. The idea that Amazon has already won in this category is simply not true (yet, but still). Staples did ~$10b in online sales last year and Office Depot did ~$6b. Online only. Staples sells more online in pure dollars than Ap…
Realistically the only way they can go is down. People just aren't even going to buying more of what they sell. The threat isn't Amazon, it's Apple. People are going to continue to use devices more and pens less right up until no one uses pens any more. Also, bear in mind that you're quoting an article from 2013, and Staples stock fell by about 25% in 2014. They've picked up a little since then, but they're not going…
My point is that these business are a lot larger than people realize, and that the phase out is going to be a lot slower than people think because it's primarily enterprise recurring contracts that are powering their sales.
That said, I use the printer at my office maybe 1x/week, so I agree that it's not long-term sustainable. This is why consolidation is a good bet for short-term viability and the deal is a good one for Staples for right now.