I've seen roulette tables with displays showing the last x spins, red vs black %, etc. Would they do that if it helped people beat them? I suspect they do it because it will encourage people to bet who think they see a pattern.
Knowing the totals of reds, or blacks is quite pointless, telling you nothing whatsoever.
The objective is to con those with little knowledge of maths and probability into betting.
Those who put their belief in luck.......whatever that is. In the same way that 99.9999%
of the punters imagine they can use family birthdays, their imaged lucky numbers,
or numbers from some flash of inspiration to pick the next number the ball drops into.
They are encouraged to think this.
For the same reason lottery winners are paraded through the media. Look how easy it is,
even this moron won without even trying.
In the same way, adverts for alcohol always show small happy groups of people in a sunny,
and/or pleasant place enjoying the booze. (drinking is always associated with happiness).
The gambling industry wants you to believe you can pick a number and the booze industry
wants you to believe that happiness will result by drinking their product. Both are successful,
resulting in super-normal profits. Often those testing the theories, somewhat less so.
On gambling, I haven't for maybe 40 years. Wining is far to time consuming and stressful. You
need to be young to win. Then there is the boredom of course. Apart from the fact that I am
retired, so far too busy all of the day, every day. I could do with another 40 years actually.