It gets even worse:
https://unity.com/pricing-updates

Can I get a discount on the Unity Runtime Fee?
Qualifying customers may be eligible for credits on the Unity Runtime Fee based on the adoption of Unity services beyond the Editor, such as Unity Gaming Services or Unity LevelPlay mediation for mobile ad-supported games. This program enables deeper partnership with Unity to succeed across the entire game lifecycle. Please reach out to your account manager to learn more. For details on Unity LevelPlay, please contact your account manager for ad monetization, or contact sales here about ad monetization.

What is Unity LevelPlay?
Unity LevelPlay is an industry-leading end-to-end ad mediation platform for game and app developers. It supports everything your business needs to scale. With Unity LevelPlay, you can:

• Generate revenue with monetization tools and ad sources through Unity LevelPlay mediation’s competitive real-time auction and optimization tools.
• Gain transparency and data availability with granular breakdowns to pinpoint opportunities immediately. Acquire users at scale using exclusive user acquisition solutions and automated targets.

Just what the games industry needed, even more advertising.