The mahouts work the streets for money, but behind this simple answer there are a number of far more complicated factors.
Domesticated elephants have been used for work in Asia for thousands of years. Tasks have included logging, building, transportation and providing support during wartime. However, in the modern world, the elephant’s strength and intelligence has been made obsolete by machines.
In Thailand, the problems were particularly exacerbated by the logging ban of 1989 when thousands of elephants were put out of work simultaneously. The elephant’s owners, often small families, have seen their animals go from being net wage earners to being a huge drain on their finances. Many traditional mahouts see no option other than to take their elephants to the city to earn an income.
On the other hand, richer and more unscrupulous criminal elements have been buying up high numbers of elephants and renting them out to people who will take them into the cities. They are using the suffering of these mighty animals to line their pockets.