As what the question is, Do you think governments should set limits on how much one can gamble daily?
I think the policy to set the limit of the number of gambling to the community I think it can be done depending on the state and the government itself, the positive side is a good action to overcome deeper addiction to its citizens.
But there are questions that must be asked.
1. Does that apply to illegal casinos.
2. How does the government know that everyone bet in a certain amount for example as you say € 500/day and so on.
Does the casino have to make reports every day to the government.
3. If the rule only applies to legal casinos, I think users will use illegal casinos that do not have rules.
Conclusion: The government may carry out limits for gamblers, but it will not run smoothly 100%.