I "waste" a lot of money on Roblox - $30-40/mo. It's where all my kids friends are, and it's a safe space on the internet that I trust as a parent. They build theme parks, space stations, small businesses – it's amazing, silly, and safe.
IMO, we should be teaching the next generation, by example, that the safest spaces on the Internet are the small, decentralized spaces that we create for each other, not the large, centralized ones created by companies that aim to exploit us.