These EULAs are the equivalent of warning labels on soda bottles that loosely read "Warning: Contents under pressure, don't point at your eyes"... who is that written for? We laugh and call it unnecessary, but that warning exists because there is precedent that must now be defended against.
When those ludicrous cases are widely used as a means of attack or personal enrichment, of course corporations will respond with excessive legal restrictions. Their shareholders don't want to lose money to frivolous lawsuits or be exposed to risks competitors have covered.