This phenomenon is a common case in my country where people often avoid some betting Machine in the casino, simply because they feel that it no longer pay as before.
Funny how superstitions completely remove all the logic in a human brain, the same superstitions that religions and cults use to control certain vulnerable people. Just read the math and learn how slots work, which gamblers never do.Quote
But people go to an extent of looking for Machine of good and or bad luck.
A machine does not determine luck, but people believe in such things and good luck charms. All the more reason to set up a charms business near an offline casino, business would be booming 
There is nothing wrong with changing machines to play but to base that on a reason of good luck or bad luck is absurd.