You can hate what Meg did but if she could have saved HPE/Q, she would have gone down as the greatest CEO in the known universe. Hating her for her inability to fix the massive damage before she came along isn't fair. It was too big to manage. Simply said, the damage was done starting with Carly. Mark pretty much doubled down on the stupid of adding new businesses (EDS.) Leo was too short lived. Who knows what he would have done. Meg came in and tried. I give her credit for that. While she does try to spin as if she did something special, she couldn't fix it. I don't think any one could. It's over.
HPQ will do ok for a bit but it's cornering the market on declining businesses. Eventually it will have to be split up again. My guess is "HP" will go with printing. HPE really has little to lean on. It too will be broken up. The letters "HP" might live on in some form but it's otherwise all over. Agilent and Keysight will hold on to what remains of the Dave and Bill legacy (if anything.)
Dave was right ... if we focus on the stock, we are doomed. Doom as arrived. I don't blame Meg for trying but it was too much and too big. The split of HPE and HPQ bought maybe 3-5 years tops. While HPQ looks ok now (who'd of thought?) it will go into a decline and split up. Weird that "HP" could eventually on be a "printer company." It was a side business originally although Inkjet certainly paid a lot of bills and delayed the decline. But maybe 3D can save it. Who knows. I don't.
We can speculate that a Bill and Dave led company would have survived but we don't know that, That HP was long ago. Dave did say that computers will be the death of the company. Go figure.