it is that sort of mentality that kills companies.
Sometimes true.
On the other hand it can also be a very effective strategy in creating cachet and false scarcity. Look at how it has been working for Apple recently.
Substantially different, yes.
Is the 87 **better** than the 86?, not in my opinion.
I actually prefer the 86.
YMMV, it's all down to personal taste and preferences IMO.
If you need arrow keys on a Poker you can switch on an arrow cluster in the bottom right of the board if you don't mind losing the other use of the 4 keys that are affected. This is done with Function+Space so can be flicked on and off in a moment if desired (but that's not really the idea).