I don't see how they can organize the Club World Cup every year, let's take a look at the calendars:
- 2018 World Cup: June 14 - July 15
- 2020 Euro Cup: June 11 - July 11
- 2024 Euro Cup: June 14 - July 14
- 2024 Copa America: June 20 - July 14
- 2025 Club World Cup: June 15 - July 13
- 2026 World Cup: June 11 - July 19
As you can see all these tournaments take place between mid-June until mid-July, so there is no way to play the Club World Cup every year, there are no dates available.
Of course I didn't count Qatar 2022 since it was played during winter, which is an anomaly.
The good thing is that FIFA already rejected Madrid's idea to held CWC ever two years. They're still stand with their decision to hold it every 4 years which is so good. A team that win it can wear World Champion emblem for 4 years. It makes the competition becomes even more prestigious to win.
And another good news is that FIFA is planning to increase the total participants of CWC to 48 clubs in total. So many clubs have chance to participate on it.