https://www.pcgamesn.com/sea-of-thieves/sea-of-thieves-pets-microtransactions
"Our plans for launch is to deliver a good game experience, and so all our efforts are going to be on making sure everyone's happy, we're reacting to feedback if there are any issues, etc," executive producer Joe Neate explains. "But then, as we move into our service-based game - think about a month or two after launch - we're thinking about our first major update that has new goals for people to achieve, new rewards and stuff."
"But we have to have an optional way for people to spend money in our game, because we are running it as a service with a large team," Neate says. "So we looked at the right way to do this for Sea of Thieves. The people who love our game, have been playing it for ages, and are happy to spend money on things that they love and the hobby that they enjoy - what feels right for our game? So anything we add in this area won't affect power, won't affect progression. You'll know what you're getting, so you will be buying something specific."