If you want to purchase some corps then head over to the Kingdom of Sacred. I just started it yesterday. I have to build up the education and other indexes, but I've already set the tax to 0%.
I believe I have about 11 state corporations in the country right now. I'm not a big fan of running corporations (because I haven't taken the time to figure them out yet) so if any other CEOs want in, you are more than welcome....
Just added 7 million workers and now have Space open for CEOs in Arion Psi Nu And Rho All have high Welfare Index and low Tax. Transfers get first consideration. No weapons Corps and please set salaries to 300 or above.