It is correct that gambling site offer welcome bonus to attract users to their site but that doesnt mean that we will create multiple acciunts on their site besides that we should create unique accoubt and refer friends and family. If we create multiple self account then that will not be helpful for them as a result they may lock all of oir account.
Aside from being caught and freeze all the account. I think it’s useless because casino welcome bonus often have a high wagering requirements which is extremely hard to complete.
You can add the max win on the bonus set by some casino as extra hurdle to avoid being abused the bonus by multiple account users.
Casino is prepared on worst case scenario.
In other words, only dumb who will create multiple accounts in order to chase welcome bonus because it will just like a wasting time and money for the players who try to chase welcome bonus which come with big wagering requirement.
Welcome bonus is in my opinion targetting new gamblers who have just wanted to try gambling for the first time, gamblers with no experiences before who might be attracted with the wording like "Get 100%, 200% bonus on your first deposit".
This gimmick may attract newbies much because newbies may take it like free money until they realize that there are some terms behind the bonus.