Both are important and one should not choose on which one to prioritize to secure. Any of the two, money or user database, when breached will automatically tarnish the reputation of the casino. So, the casino placed the same level of importance on both user database and user funds.
Now based on this, do you feel a casino is more likely to be careless with people's data than they will with money to hackers because most hacks seem to target money they have more?
No, if a casino value integrity, they will safeguard both the money and the user database. There is no need for the casino to choose and prioritize because both are equally important.
I think. The data they hold and risk losing is more important to gamblers than the money the money they have,
Not entirely true, some gamblers put more important to funds
thatthan data breaches. So to meet the demand of two parties (one prioritizing fund and the other one prioritizing identity data) casino tend to equally secure them.