You really should do some research before you make an ass of yourself
Here do a little reading
10 Supreme Court Rulings That Turned Corporations Into People – Alternet.org
as you can see the SC says they are entities ( same as people )
You say they don't use services provided by the Federal Government, so they have their own armies , navies and other type military units to provide for their own defence.
they have their own Infrastructure like bridges to drive over ( that FIT helps pay for )
Administration of justice-
General Government-
and many other things the Federal government provides them and helps them with.
I don't know where you got your info that corp. income taxes are up
I have posted on here many times that in 2017 over 42% of all US corps making over a million dollars in US profits paid NO FIT NOT one cent and with the Trump Tax cuts that percent went UP to 65% according to the GAO ( and I provided that info from their site a long time ago)
so if there are a lot more large Corps NOT paying a cent in FIT how can the revenue from them be UP?
and again IF they had to pay a MIN. FIT and help pay for the things the Government provides for them WE the hard working people could get a larger tax cut ( a real tax cut for people that work for a living and earn under 125,000 a year) we would have more money to spend and and Revenues would go up and Corps. would also benefit because we would have more money to spend on their products and maybe could hire more people
YOU are always saying we should be able to keep more of what we earn well IF the large Corps would help pay for what the Government provides them and helps them with it would be more fair for all of us THEY should help pay for what they use and NOT get away with OUT paying aa cent in FIT
have a nice evening