Yeah that's my point of view as well on the French system, going after tax exemptions is almost a full time job since there are so many of them. And of course the companies who end up benefiting from those are most often the least deserving...

I like the way Singapore keeps it simple by having tax exemptions and lower rates for the first $ X of income (and overall lower tax than most places in Europe), this is easy to work with and allows you to reinvest in ways you see fit rather than having to deal with a bunch of other entities from advisors to government agencies that all have their own agenda.

Edit: corporate income that is.