Bitcoin $BTC marketshare rebounded a bit past year from low of 36% at end of 2021 bull market (where it typically bottoms) to now 50%. It did make a higher low compared to early 2018 where it bottomed at 33% at end of previous bull market. However, it stayed a lot longer in 30% area this time and is gaining back market share a lot slower.
I think it is very unlikely to hit 70% again as it did in previous early bull market of 2019-2020 but another bump up to say 55% before the next decline to happen in last part of bull market, is possible.