Also, the average fees for a bond issuance might be $1m because most bond issuances are small. It's usually higher on a percentage basis.
That explains more
Giant investment firms like Goldman Sachs do their own due diligence before entering in any deals. They did several deals with 1MDB over the years, and the corruption should have been obvious earlier if they actually cared to check for it.
I don't think the Malaysian prosecutors are disputing that the (previous) Malaysian government was corrupt. They arrested Najib Razak (the PM during the 1MDB project), as well as other officials. But they're also saying that GS has a partial responsibility. And given the numbers provided in the news article I don't find it hard to believe.
I know it might be difficult for US or Canadian natives to understand this. But people from most of the rest of the world know exactly what I'm talking about.
Just to make my point clear, a few decades ago (in Africa), we didn't have electricity (quite a lot still don't) we used candles and lamps. Apart from shutting down a candle factory, there wasn't much an individual could do to affect the whole country (other factories can open and candles can be imported). Now we use electricity for lighting and it is provided by one government-owned entity. It makes the head of the entity very powerful giving him/her access to billions and billions of dollars. They also able to screw the whole country up.
[0]http://www.702.co.za/articles/329758/sorry-south-africa-for-... [1]https://mg.co.za/article/2018-01-12-00-eskom-has-a-problem-a...