@Cokie,
In case you are stuck in a blinkered middle class enclave, where everyone is in lower or middle management, you might consider this:
I just visited a large company. They have a Call Centre.
I asked several ( not all of course ) - they use their personal computing devices exactly for the kind of things I described - what on earth would they use Office for?
[btw - there are allegedly over 500,000 call centre workers in the UK alone ]
A couple of guys delivered my frigde freezer yesterday.
Do you think they use Office at home and have banks of large monitors? Or do you think they use their personal phones/laptops/whatever for the kind of things I described.
If I go round the corner to one of the major London train stations - do you think the station and underground staff are using Office on banks of large monitors at home? Or do you think they use their personal phones/laptops/whatever for the kind of things I described. .
If I got to any of the nearby branches of Sainsbury or Tesco - do you think the workers on the shop floor and in the stock room use office and banks of large monitors? Or do you think they use their personal phones/laptops/whatever for the kind of things I described.
It goes on and on and on...
As I look out of the window - the street cleaners are going past again - what do you think they do when they take a break and get their phones out?
Across the road there are gardeners working in the Park - what do you think they do when the stop for a few minutes and get thier phones out?
The Hilton is just a few yards away. Granted, the manager might do some work stuff on a device on his way to/from work - but what about all the other staff? The doormen , the bar staff, the chambermaids - what are they doing at home/on lunch breaks. I think you will find they are messaging their partners, going on Fbook and playing Barfing Bovines (TM).