They might dabble in it, but I don't think it'll take off as most of Web3.0 people imagine... There are just too many challenges.
Games that offer microtransactions already don't do well in the mainstream, and truly supporting Web3 will give companies less control over their IPs and most companies wouldn't want to give up such control.
Plus, the legal stuff... There's a reason games don't allow you to sell items for real money. It creates messy legal situations.