If you remove the iPhone from the profits for analysis, it gets more intersecting , the iPad is not destroying the competition as sales keep dropping, it's the price keeps going up to maintain the profit . So unit for unit, iPad sales are declining.
Jobs was smart enough not to add a stylus to an iPad, so yeah that is tims fault , jobs was right about iOS and not having a KB / pencil as input devices. Tim has no vision, he will add any product or variation of , that might bring in profits.
Timmy is not following what Jobs started, he is following the $$$ and slowly destroying what Steve started. Every time steves leaves apple the product line fragments chasin profits and company comes undone, 1997, 2017....here we go again. History repeats