All companies that have bought Bitcoin will sell it at some point,
But you dont know the buying price or time. We see them in the limelight this year but if they have been diligent enough with their investments which they usually are, they would have bought when price was back in 10k USD or lower. Taking that into account any price that they sell at in this market is a profit.
and this point will mostly be this year.
That is longshot. With more governments that may be willing to allow crypto, the price will increase. These companies know how to milk out a price from an asset instead of selling everything at one price. So they will likely sell by at a slow and staggered pace, not all at once.
Can we consider the average bitcoin price that some companies bought bitcoin as an indicator for our next bottom or ATH bottom, assuming that those companies will try to sell before they achieve losses?
Again, I am more of the assumption that they are not selling everything at once.
Again if they sell, small cap investors will also buy making the price balance out at a level much higher than the average buying price of these companies put together. These small cap groups havent been able to buy big amounts in bitcoin, courtesy of the high price.