if you give any $ at all even once before at any level your going to be donor lists for everyone on your side, that’s just how this whole system works. only way to curb that would probably be properly publicly funded political campaigns (as various other countries have, canidates get x set amount of $/set % of airtime alotted to them etc.).
and well…in the US, due to the various levels of disenfranchisement, on average for most their national level politics is basically a non-choice. if you live in a state where practically nothing past the local/city level actually matters but you still want to support non-lizard canidates…best thing you can do is either donate $ or time, and $ is generally easier to come by
in a capitlistic hellhole like the US though…you can’t reach 8-900k (average rseat/pop ratio now iirc) without alot of $. was actually part of the reasoning for capping House seats, to curb a previous rise of populism that threatened US political establishment. make campaigning expensive and then you need approval of wider party/corporate (or lots and lots of volunteers, for upsets) interests to even have a shot.
it can always go lower, there are hundreds of reverse split/dilution scam-cos just like DJT that exist solely to siphon $ off of public markets