I'm not old enough (and certainly wasn't in a household wealthy enough to afford it at the time) to know what's going on with the Lisa, but there was nothing with the Apple Tv, or Magic Mouse. For those products, we're simply not the audience. I know plenty of casual mac users who were doing fine with those things. People in tech circles love to go on about Apple's mouse deficiencies but from my experience around casual computer users, PC users too, is that most people barely know about the second mouse button and the very concept of a "context menu" is alien to them. I keep having to remind my stepfather how to do things like copy and pasting in some apps because he always forgets about the context menu and even remembering something as simple as Ctrl+C + Ctrl+V is something he's not willing to do for a reason I can't even fathom myself, it literally makes no sense to me, it's just how it is.
So, from my point of view, Apple insistence on mostly forgetting about secondary functions on mouses is the right thing. The Magic mouse doesn't have a middle click? Most people don't even know how to right click. The only thing a mouse for casual users needs to do right, is left click and scrolling and the magic mouse has perfect touch scrolling.
For the same reason Apple has hidden functionality like Cut&Paste from the finder. You need to hold the option key to activate the "move item". Apple wants you to drag&drop instead. The "default" in Apple land has always been to serve the need of the common, not the expert. So there's no traditional CTRL+X CTRL+V. Instead you need to do CMD+C as if you were copying, then CMD+OPT+V to "move". Everything advanced tends to be hidden into OPT key. It also changes the behavior of various menus to show things Apple doesn't want to show to the commons.
The touchbar is actually a very, very clever thing, we're just not the audience once again. I firmly believe it will never have much use among professionals who have nothing against learning many keyboard shortcut combinations or who even do things like customizing them (Karabiner to the rescue!). The touchbar is for people who didn't even use the mouse right click, and who don't understand concepts like context menu that change based on, gasp, context. It's actually going to be a boon for these people. Even exposing basic functionality like copy paste is going to help average users be slightly more productive with their devices.
The only issue is the MBP audience having a lot of techies and audio/visual professionals. The touchbar would be more sensible on something like the iMac and Macbook.