Its actually happening everywhere in this world, if its not completely transparent as US then the funding will be off the records and politicians owe the favour in return when they get to the power and you know when it happens in the non transparent way the corporate funds every one on the race so they can ensure their authority no matter who wins it so the solution is bringing the strict laws against such funding but don't really think it will be effective as long as corruption exist.
You’re absolutely right money will be given under the table but that would still be very limited. Politicians bank accounts, money their using for the campaigns etc are all traceable. These high level politicians get millions and millions in donations, that’s way to hard to give under the table. Plus you could increase transparency requirements.
