I think there's a bit of paranoia here. Why would anyone want to destroy zeitcoin? You can't even do that anyway. At best you can temporarily lower its price and that's it. Just relax and enjoy the cheap prices
Ok, this will get some tinfoil hats pics, but here goes.
You own a business where you are basically controlling a large part of the money supply.
A new business opens up down the street with a new technology that is faster , more convenient, even allowing money to be transferred virtually at very cheap rates, and placing control of the monetary system into the hands of the people, removing your control.
The Tech is already out there, so you can't just buy them out and own it completely, your only real option is to try and discredit them , by causing massive fluctuations in their price, and then pointing at them and saying look how unstable they are, they are not suitable to conduct business. Now you know this is a complete fabrication but if you can stop them early enough , the public mindset will stop or hinder their growth , this allows you to keep control of the money supply and keep your advantage while destroying this new business model.
A good Example is
https://en.wikipedia.org/wiki/Who_Killed_the_Electric_Car%3F We could have had electric cars back in the 90s, but the oil industry zapped them ~25 years ago to maintain their control of their market and still hinder to this day causing them to be unaffordable for most.
And think on this , why don't the top of electric cars have solar panel integrated into the frame panels, helping recharge the batteries, when the sun is shinning.