There are two factors that make online real money casinos offer way better odds and deals to gamblers than brick-and-mortar ones.
First, with easier accessibility and more choices, it only makes sense you’ll be able to get better rates in online ones. In most instances, even if we assume your city has casinos, the place you live will only have 2-5 ones in it, at most. That means you’ll only have a very limited number of options, and the casinos don’t face almost any competition locally. So, they don’t have any incentive to provide better deals to gamblers. On the other hand, the online real money casino gambling scene is extremely competitive. There are thousands of online real money casinos competing internationally for clients. This fierce competition forces them to offer better deals and odds to attract more gamblers.
Secondly, Do you know how expensive it is to run a brick-and-mortar casino? You need to pay for the building, for the professional staff, for the games, the government, etc. They all add up to make running a casino one of the most costly businesses in the world. And the casino owner needs to make up for all these costs somehow – he isn’t running a charity. In most cases, what happens is that the casino will make the rules of the games harder, the payoffs to the clients lower, and cut corners all in an effort to cover their costs. This means you’ll have a lower chance of winning and lower returns when you do win in brick-and-mortar casinos.
Online ones have almost no overhead costs, on the other hand. They don’t have to pay for expensive casino game tables and machines, they don’t need to hire a ton of staff. They don’t need to rent a large building. This means it is much easier for them to cover their operating costs. This translates to a lot more bonuses and better for you, the gambler. If brick-and-mortar ones started handing out bonuses and offer rates like what real money online casinos offer, they’d go bankrupt in a year. That means you have the potential to win more often and bigger in online ones.