NET
12 Next, I decided to consider wisdom, as well as foolish behavior and ideas. For what more can the king’s successor do than what the king has already done?
Darby
12 And I turned myself to behold wisdom, and madness, and folly; for what shall the man [do] that cometh after the king? that which hath already been done.
KJV
12 And I turned myself to behold wisdom, and madness, and folly: for what [can] the man [do] that cometh after the king? [even] that which hath been already done.