Wat

The word you are looking for is corruption. It always gets mixed up with lobbying. Lobbying is not inherently bad. It is good practice to ask the people a law applies to, if the law is feasible. It helps to avoid passing laws, that are completely impracticable and destroy a whole sector of economy in the worst case.

Those EU lobbyists have less capability. They cannot finance a campaign for a politician, can they?

The US has #CitizensUnited.

The US also has corporate lobbyists who use fraudulent techniques such as writing thousands of letters from fake people (they got caught doing this on the #netneutrality issue whereby Congress got thousands of letters appearing to be from individual human beings who all opposed network neutrality -- LOL). Are EU corporate lobbyists willing to partake in such blatant fraud?

Biggest lobby in the US → #NRA. The NRA owns about ½ the politicians. And since the NRA are right-wing extremists who work with #ALEC (right-wing lobby & bill mill), they push everything in favor of big corps and against human beings. They block progress.

I don't know, why?

I never said it wasn't a thing, just that it's harder. Open secrets says that there are 12,000 on Washington D.C. alone. I'd guess there are many times more than those on every state, with the largest states having more. It's a global issue, that's not an argument.