You said exactly what I came back to say lol.
Company tax is a tax on profitability, so once you've made your 30% margin, the Government scoops a bit of it off the top. This is wholesale-y different to sales tax or ad valorem taxes, which tax X cents in the dollar from every unit sold. Company tax only hits once all expenditures are taken into account, not on every single unit sold. Sheesh.
I don't agree with your assertion that companies may not provide their services or fire workers to maitain a level of profit which is reduced marginally because of company tax; company tax has always been there, will always be there and is taken into account when making business decisions. I mean, am I not going to work more hours because I don't get 100% of the additional income I earn? Am I going to stop working because Gov'nant gon take ma bacon? Please.
As I've said numerous times (sounds familiar with some of the arguments on tax and Government on here...), taxes on rents are amongst the most efficient taxes. Companies exist to make a profit, if they do, the Government, who provides all kinds of benefits, infrastructure and securities to them and their workers is 100% entitled to take some of the gain? Where do you think they'll get the money to provide roads/hospitals/trains/parks? Oh thats right, the low tax model employed in Umerica has meant you are now stuck with 50 year old public transport infrastructure, people who die driving between hospitals because they can't afford insurance...I could go on, but you see my point. Tax and Government are facts of life in a modern, capitalist economy, deal with it or go live in Uganda or something.
I'm not arguing for or against the size of Government here, it just seems like sometimes people think we'd be better off with no tax and no Government. Hate to break it to you, but you are wrong.