I just hook up a Bluetooth keyboard and put the tablet on a stand.
From a business standpoint, it's a waste of good R&D money to try to develop an integrated keyboard solution for a tablet. Nexus devices always have vestigial ports and plugs, and this is just due to Google's lazy practice of axing a particular feature over cost concerns, and then they just ask the hardware manufacturer to leave the remnants of it in rather than spend more money revising the design.
People that really need keyboards and mice will already have a preferred Bluetooth or OTG USB solution, meanwhile the OS itself doesn't require nor is it designed around those input devices. Personally I find it annoying and slow to use the OS with a mouse and keyboard, and only use the keyboard if I have a table nearby and need to type for extended periods of time. If such an occasion wasn't so rare, I probably would have bought an actual laptop or Chromebook instead.
Microsoft makes a point of marketing the Surface as more of a business device, but the RT still fell flat in that regard (wtf no Active Directory integration?), and the Pro is obscenely expensive for a device that doesn't offer any additional business features that can't be accomplished by a cheaper Windows 8 laptop. Keyboards and mice on tablets are niche features, and most people balked at the fact that a touch cover for the Surface RT costs an extra $100, which was also a pretty terrible keyboard overall. Google wasn't ready to make the same mistake, because historically Samsung charges obscene amounts of money for their accessories as well.
If given the choice between a $30 Motorola Bluetooth keyboard that requires its own batteries, or a $70-$100 Samsung keyboard that hooks into the pogo pins, I'd prefer the $30 option. I use my tablet like a tablet, and use a desktop or laptop when I need to do actual work. Trying to shoehorn my tablet into being a laptop replacement often ends in failure and disappointment, so I just accepted its limitations and moved on.