I don't get how having people come in is cost cutting? There's tremendous real estate savings when you have more of your staff remote and you're able to shrink your footprint. (now, Apple having invested so much in Apple Park, I get wanting to realize their ROI).
Word is the companies in Silicon Valley are using the recession and layoffs to pressure their employees back into the office (whereas elsewhere, more companies are embracing the opportunity to realize savings).
And, yes, how productive people are working at home varies case by case. If you're having issues with distractions you need to find a way to have an isolated space.
Back when I worked at BlackBerry, I had to setup an office in the basement as my dogs wouldn't leave me alone if I was foolish enough to work in the living room.
Oh..and those thinking they're being so smart with badging in, then going home at lunch...umm...VPN logs?