[nostromo]

It might help US M&A however.

For example, check out this story about how Skype was a lucrative acquisition for Microsoft in part due to US tax rates.

http://www.marketwatch.com/story/microsoft-skype-deal-shows-...

tl;dr: Microsoft had beaucoup bucks stashed in the EU that they didn't want to bring back to the US due to our corporate taxes, so they put it to use by buying Skype.

Also, keep in mind that not every corporation is in such an enviable position as is Apple.

[OnyeaboAduba]

It might but I dont see how M&A helps the general public.You could make a argument that they have a negative effect actually.

[atlbeer]

It creates instant millionaires that want to buy houses, cars and start new companies.

It basically converts an illiquid business asset for a person(s) and concerts it to a liquid asset.