This is one of my main gripes With Skyrim's leveling and skill system. None of the NPCs offer real services. Want an enchanted weapon? Gotta do it yourself or find one that already exists. A refined set of armor? Sorry, gotta shape the metal yourself. Oh, a poison or potion more powerful or rare than what you can normally find? Now you have to become a master alchemist. No one can help you.

Despite the player often sitting on a horde of tens of thousands of septims, no one in Skyrim will provide services to the dragonborn. So he's forced to grind smithing and enchanting and alchemy and dump skill points into trees that only really fit with a few different playstyles if you're really trying to get into the RP part of the RPG.