>>97345153Technically they already have with how they did Iron Man.
Now, by another technicality the comics beat the movies to the punch, but in regards to film the degree of barely functioning hero that Stark was portrayed as was not common at the time. They could have done a more conventional version of him looking at how Howard was done in Captain America, but clearly decided to unravel him further with each installment.
To the extent it's become common now what with your Stranges, Quills and so on affecting a Stark like "stumble to virtue while leaning on vice" approach to their heroics, so people gloss over it, but still.