You seem to forget who got those legislators elected. Of course they intended it.
The real problem is that the corporate tax shouldn't exist. It's too easy to fuck with and manipulate a profit tax by being creative with what counts as revenue and what counts as expense. And tax incidence studies have repeatedly shown that the burden of corporate taxes fall disproportionately on labor, not capital. The better idea would be to eliminate the corporate tax entirely, taking the world's entire corporate tax avoidance scheme with it, and instead tax personal income, dividends, and capital gains at higher rates. It would actually be more progressive and far less avoidable, and mountains less complex.
The real problem is that the corporate tax shouldn't exist. It's too easy to fuck with and manipulate a profit tax by being creative with what counts as revenue and what counts as expense. And tax incidence studies have repeatedly shown that the burden of corporate taxes fall disproportionately on labor, not capital. The better idea would be to eliminate the corporate tax entirely, taking the world's entire corporate tax avoidance scheme with it, and instead tax personal income, dividends, and capital gains at higher rates. It would actually be more progressive and far less avoidable, and mountains less complex.