They could first start with the rich, as they are a minority in the country, then move onto the middle class and then to anyone who holds a bank account...
Bad timing for Kamala to actually go radical on economics.
I have seen many negative comments about Kamala, some say that she wants to implement communism, when did she lose her mind? With the thing about X why does she want to prohibit it, these are things that do not fit for a country like the USA, especially because at a global level the USA was seen as a country of broad freedoms and practically as the world capital, both economically and in any other area, and when politicians get involved in the economy, these things do not fit , I think what you say is the most correct, starting with the wealthiest and going down to the lowest strata.
She has always been a more extremist left wing component of democrat party, and that is why the party tried to keep the candidature of Biden for reelection the maximum they could. They knew Kamala's views would be immediately explored and exposed by Trump campaign, what can prejudice her acceptance among americans who have traditional views regards economy and society.
On the other hand, Biden was still able to gain the sympathy from this portion of the country, despite being a democrat and having extremist left wing allies behind him.
The point is that most people don't understand the backgrounds of politics, so politicians use the ignorance of the masses to benefit themselves and to put their plans in practice, doesn't matter if it's going to be good for the country or not, and doesn't matter if most people are adept of it or not.