Maybe with other brands but not decently maintained Kubotas. There is an initial cost and a monthly cost for usage just like most things in life but many used Kubotas sell for more or very near initial cost if decent maintenance is performed. I've bought, sold and traded lots of Kubotas in the last 12 years and my per hour cost for usage has been very small. Get the right machine and maintain it and it's usually not even an expensive hobby.
It has NOTHING to do with what brand a person buys. It's that you want more implements, more tractors, more of everything. I personally have not lost 1 cent selling any tractors or implements.