If AI companies want to sue webmasters for that then by all means, they can waste their money and get laughed out of court.
The crawler's normal operation is not interfered with in any way: the crawler does exactly what it's programmed to do. If its programmers decided it should exhaustively follow links, he's not preventing it from doing that operation.
Legally, at best you'd be looking to warp the concept of attractive nuisance to apply to a crawler. As that legal concept is generally intended to prevent bodily harm to children, however, good luck.