It is almost as you explained it in my country as well. Lotto is everywhere and I think it is because it is easy to set up at any corner that is legally allowed. You see most of them in a small kiosk in my country and with their small gambling engine that is both internet and intranet connected. It is easy for them to get it set up while the house continues to cash out on a daily basis. Bringing it closer to people is another strategy to earn more for the house and people who have never gambled might want to try it out and from there they could be regular players, and for those who know how to gamble it, it will be easily accessible to them, so, there won't be any excuse for them not to play.

Now, about your question, it might be wise, and I did that a lot when I played the Lotto years back. I did that so that I would randomise my chance of winning. You know, Lotto is a game of numbers, and the more accurate number you predict right, the more your money. Some will now vary it in 2, 3, 4, 5 numbers and so on depending on the kind of Lotto we are talking about. This would have helped the gambler to improve their chance better than though played just one. Only the money used might be divided among all the tickets bought, it must be the same amount and it shouldn't be much to cut costs.