Seeing the statement above that declares the Beatles received "too much credit" because of their liberal borrowing from black musicians, essentially repackaging their sound for white audiences, is pretty funny coming from you. In another post earlier in this thread you said, "Like I said they're a great band I just don't know if they can compete with the Led Zeppelin, Pink Floyd, Blue Oyster Cult, and Van Halen, etc."
Umm, pretty sure the first few Led Zeppelin albums consist entirely of blues covers, covers in everything but name with way more liberal borrowing than John and Paul ever did, and songs stylistically very much part of that canon. Page and Plant were involved in several lawsuits about this over the years, and many of their songs had their writing credits changed and/or they had to pay settlements to the original artist.
I don't think your take is stupid -- far from it, there is a very large kernel of truth there about how black musicians influenced white musicians when black musicians in the 1950s and 1960s could not garner mainstream acceptance or popularity because of both formal and informal segregation. The Beatles were just one of the least guilty bands about doing this... not sure they even have any straight blues covers in their catalog, and they do not have many 12-bar songs to their name... while Led Zeppelin (way more blues covers/in everything but name covers) and and some of the other 60s/70s hard rock bands are the most guilty of repackaging the blues.
Not saying you shouldn't like LZ. I like them just fine if a tad derivative. I just think if the "borrows too much from unsung black musicians" is your problem, well, you might want to look at your bands.