We have many very good gaming clients who rent Dedicated Servers from us, as we are present in 4 countries in Europe.
I suppose your potential clients also want to rent a Dedicated Server or VPS from you because of multiple locations?
Latency is important for them and also it's very important to be able to protect them and yourself from occasional DDoS Attacks. Gaming clients do get attacks from time to time.
It all comes to justified operational costs for those clients. If you cannot cover the costs of proper DDoS protection for them, it's not smartest to accept them into your network.
Most affordable DDoS protection solutions aren't always good for this type of client as they go via Remote DDoS Mitigation Centers, which harms latency for those clients.
Anyway, my advice is to give it a try!