Given the state and nature of Louisiana politics, I'm not surprised.
Louisiana lawmakers reject bill to authorize sports betting. WWLTV.com
For a state that has horse racing and full casino gambling the "expansion of gambling" argument rings a bit hollow. More likely the financial structure of the bill wasn't to the liking of the legislators in a State that's governed more poorly than Texas. (Who would have thought that was possible?)
As it is I think something will eventually be passed, once sufficient money is placed in the politician's troughs.