Headlines abut corporations being bought by foreigners are distractions. It isn't even an equity capital addition, but a sale. So former owners have sold and use the liquidity for something else.
Whenever you see that, look at the trade balance; there's little reason to think that foreigners buy domestic businesses more than domestic capitalists buy foreign businesses if the trade balance is positive.
One could look more closely (at the direct investment statistics instead), but the gain in information isn't worth it imo.


One example: Arab monarchs like to buy shares of the German automotive industry and produce some occasional headline this way. So what? It means nothing on the macro scale, it gets dwarfed by all the other activity.