Imaro
Legend
No.
Magic flows through the world, and certain creatures are rich in it. Without magic flowing through their bones hill giants would collapse under their own weight due to the square cube ratio and dragons would tear their own wings off before blowing up in a nasty mess of internal plumbing. An anti-magic field should kill a dragon stone cold dead; their very existance relies on magic.
Arcane spells are a way of manipulating magic. They are creatures directly taking and sculpting the magic to their own ends rather than channeling it through the lens of a god (divine) or the spirits inherent in nature (primal). To use 3.x terminology, Fey Step is (Su). Arcane magic ranges from (Sp) to out and out spellcasting (with the Bard being its normal mishmash).
Show me where in 4e this is the default assumption... otherwise this is just neonchameleon's view on the way things work.