This is a long term game to these billionaires. They do not care about their net worth fluctuating, they care about remaking America into a place where their power is absolute and permanent.
The last 4 years were a battle between the billionaire class and the rest of us. Joe Biden delivered the biggest gains for working people that the country had seen since WW2, the billionaire class took note and banded together to put a stop to it. Their worst nightmare was unfolding before thier eyes under Joe Biden, workers were demanding and often times getting closer to their fair share. All of the 40 years of Reaganomics were under threat, the middle class was threatening to be reborn because of Biden's policies. That was the uniting factor around Trump and Trump is delivering on his promise to them to not just claw all the gains back over time, but take them all in one hail of chaos.
Their dream is back on track, the dream that only the billionaires get to enjoy the riches of the American economy. That the rest of the country, by and large, works for the bare necessities, and is terrified of losing their jobs so they are willing to take less and less. The social safety net gone so workers have no security. Retirement is also on their list, retired people collecting social security are of no use to the billionaire class, you work until you drop dead in their plan.
We are heading towards the Russian model for wealth. A country where about 115 insanely rich oligarch families control nearly everything and everyone else lives in squalor. That's what Bezos, Zuckerberg, Musk, and the rest want more than anything else. Unchallenged power so they can playb their little games of world domination.