People forget that Sasuke had to push himself to get Itachi eyes. Itachi would not have give him his eyes willingly. Thus Sasuke Power up was earned!
Unlike other people in the series who get the second strongest chakra pool in the series for free. Get a free place to live.. Free education.. Free scroll full of kage level jutsu.. Free powerup everytime they lose Or the free ability to sense and mix sage chakra. or the free ability to TNJ and PNJ my way out of everything
You mean that free place to live Sasuke also got. And Sakura. And Shikamaru. And Shino. And Hinata. And.....etc.?!
2. You mean that same education Sasuke got... That everyone else got... Not to mention just for having the right body he actually was able to get even better training...
3. You mean that Sage Mode he used clones to condense a series of training into a week.
4. You mean that Chakra pool from Kurama he got by fighting, defeating, and befriending Kurama. Since you know... It wasn't the 2nd highest until then.
5. You mean that Hokage scroll he had to Steal.... And sexually harass/assault the Hokage to escape?
Let's not play a game of "free power ups" amongst the two main characters of Naruto. Compared to anyone else in the series they got theirs a lot more nicely than anyone else: I mean look at Lee.
Works years for that speed, Sharingan instantly copies. Not to say Sasuke isn't the only one getting what feels like insta grab power ups lol.
OT: Considering Itachi was going to die anyways AND planned to die by Sasuke's hands.... It can be looked at as a pretty risk free power up since no plan to kill Sasuke existed.
But I mean the fact you had to take your brother's eyesight or life is an argument against it being free.
But at this point towards the end why bother talk about how they got them than how will they use them?!