My answer is No, mainly because most gamblers that deposit low or gamble at a low amount are strictly trying to avoid being addicted that's the more reason they are gambling with what they can afford to lose at a minimal percentage,basically because they don't want to get hooked up along the line so having used a minimum amount can't contribute to gambling addiction.
You have got a fair point there, but you also need to consider casinos going for a very low entry point are mostly going for an approach which allows them to catch the attention of as many potential gamblers as possible, instead of going directly for the attention of established gamblers with relatively deep pockets. It is a quantity/quality thing.
There are casino which only give their services to VIP gamblers, people who can afford to risk thousand or hundreds of thousands in a single night, where luxury is the norm and people with little money are not allowed, that is "quality" for casinos. Quantity would be exactly the volume they can get from a high number of gamblers, regardless of the social status and the money those people have, there is no discrimination or exclusion.
Both are valid and effective points for casinos to make money, but it is conditioned on the market they aim to.