I personally prefer self control over self exclusion, however I also appreciate that this is not 'suitable for all' SE as we have all seen can grow out of control into a mountain of problems, where the player may have just wanted a short break etc.
Betway was my 'nightmare' casino so I just stopped depositing there and haven't looked back, I've also suggested to 'disgruntled' rather than 'problem' players never to close an account for lots of reasons.
Current SE measures in general across the board are not working and IMO the whole charade needs readdressing.
I read another related article earlier today based on FOBT's and that only a massive 0.04% of users had actually used the 'set limits' options when playing.
The whole charade is actually just useless, period!!! It is in place to assure everybody that someone is doing a responsible thing, giving people a false sense of security.
Whereas the problem starts much, much earlier. By the time somebody thinks or talks about SE he/she mostly has already lost pretty much all they had themselves / had borrowed from banks/CC's / swindled from friends&relatives etc. Now with empty pockets, perfect, let's SE the player and he/she'll be safe and taken care of by some NGO's offering counseling. What a wonderful world.
Hence, nothing is done to even prevent a player getting into this situation. Every casino accepts deposit after deposit without even once a pop-up chat appearing to ask the player whether he/she is OK or if he/she would like to take a break from chasing his/her losses.
At the end of the day we are talking about a similar addiction like alcohol, drugs etc. If a player wants to find a way to gamble, he will find one, no matter what. Registering under different names, opening multiple accounts, using somebody elses CC's, going to a land based joint, etc.etc..
A common SE database would be a first step. SE from on place for gambling problems and you are blocked from all casinos/betting places, land based included for the period of the SE (1 year or similar). Anything else is just a drop into the ocean as the player will find, just as the alcoholic or druggie, a way around it all.