Every military base, every defense contractor, every dollar for education and medical.............gone............like that.
Make sure you have your paperwork in order at the border!
Of course, by the USFG, but no doubt the Republic of Texas would, as a sovereign nation, replace some or all of them. It is still a net win of 50 billion a year for Texas.
It seems you're having difficulty with the concept of net. Of course Texas as a whole would lose USFG funding, though not necessarily USFG contracts to produce weapons, or certainly not necessarily all of them. However, this would more than be made up by the elimination of USFG taxes. The difference, as I've pointed out, is 50 billion a year. Even if Texas decides to replace every single USFG program currently in place with one of their own, the state would still be 50 billion a year richer. It's unlikely that Texas would repeat all of the mistakes of the USFG, so that's even more savings.
So, larger population than many successful countries, GDP that would put it in the top 30 in the world, natural resources, and access to the oceans. Texas would make a great country. Not a superpower like the US or China, of course, but who wants that sort of expense and headache anyway?