If you have great product you don't need DRM, you will make money of it either way. Look at CD Project RED (creators of Witcher game series), their CEO said "We

If you have great product you don't need DRM, you will make money of it either way. Look at CD Project RED (creators of Witcher game series), their CEO said "We can't force you to buy our game but we can convince you to do so" and they don't use DRM because they choose to. They made a lot of money because they just care about their product and their clients.