Absolutely true, but define 'some people'. Devs, modders and your tech head purists yes, they would all drool at the thought of a stock One, but 99.9% of the consumers who buy smartphones simply wouldn't know what to do with it. Those that would benefit from such a device already know how to do it anyway without dropping another fistfull of $, so where is the market? Where is the profit?
The stock S4 is a marketing tool for Samsung to answer some of the criticism the S4 has recieved and you can bet that they are losing money on each and every one. They, of course, can afford to do this whereas HTC cannot. When Bugatti launched the Veyron they sold them for $1million each, despite the fact that they cost almost four times as much to build, so why take such a massive loss? Because the Bugatti Veyron is now the worlds fastest production car, its the poster on every teenage boys bedroom wall and it is the measure against which every single one of its peers is now judged.