People want to host Internet services from their homes. They don't have static IPs, and/or they don't want to open their home IP address directly to the public, for good reason.
You can setup some wireguard servers with static IPs. Then people can tunnel their services running at home through your servers. They avoid the cost of having to pay for cloud hosting, and you provide a shield so that they aren't exposed.
Obviously, the IP addresses on their own aren't enough to make this work. You're going to need some computing infrastructure. But you won't need lots of storage and compute. You'll mostly need bandwidth and networking equipment. The thing is, getting IP addresses is harder than getting hardware and bandwidth. You already did the hard part.