This sounds pretty awful if true. Microsoft is increasing the price of a Microsoft 365 Personal subscription from $109AUD to $159AUD citing AI costs but there appears to be a way to avoid the increase – by cancelling the subscription. When you cancel Microsoft offers an option to continue with a “Microsoft Personal Classic” subscription for the current price without the AI features.
https://www.reddit.com/r/australia/comments/1hwwu8j/microsoft_50_price_hike_sighting_ai/