One thing I hate about the sorcerer is that they stole the inborn magical talent from the wizard. Now, everyone tends to treat arcane magic as:
- Inborn, you're a sorcerer
- Not inborn, don't worry, studdy hard and you can be a wizard.
- I guess you can have granted power (be a warlock)
The way I see it is that, other than the warlock who is granted it, arcane magic is an inborn talent; sorcerer and wizard are just different ways of accessing that talent. This is why in a campaign setting you still have limited amounts of wizards, you don't have a large amount of people running around with an arcane magic initiate feat because they just don't have that spark for arcane magic.
The sorcerer might learn their magic somewhat randomly, focused around their bloodline. The wizard focuses their magic around their studies. They both have that inborn spark of arcane power, they just learn to harness it differently.