I think they'll get tired eventually.
By 2025 they're all gonna be ~30 so I doubt they'll be at a high level, even more I doubt they'll keep the whole team.
The average of Fnatic is 27 with pronax and olof at almost 30.
Meanwhile for Astralis their average is 24,8 with their oldest player being 27.
In 3 years the entire LG/SK/MIBR roster was born and died pretty much. (I consider it dead since 2019).
Considering that Astralis may have one or two more years because they are the greatest team. I think that by 2025 Astralis, if they were to keep this roster, will be like tier 3 or sumn.