There is an easy argument to make that they are a net destroyer of taste and destroy culture. I am not certain, personally.
But as a business, IKEA is as serious as a heart attack and is a competitor that seems unbeatable; an inspiration for all.
IKEA builds and manage an incredible amount of stores everywhere -- without any serious security problem. I've never read any article that IKEA complain about bribes in other countries.
Be grateful that the company risks billions of dollars by becoming unpopular among violent criminals like Russian politicians. It is bettering your country; economists claims that corruption destroys a country.
You don't help your suffering country by defending your politician-thieves, which even makes the politicians of my home country seem mild.
(Sorry for wasting space by beating a dead horse.)
Let us just hope that the Kamprad family (which owns IKEA) aren't Polonium poisoned, like Litvinenko.
(The last few months, I've seen quite a few people like you on discussion forums that defend Iran, Putin, etc. Strange.)
About the Moscow accident; I'm sure it was, partly. But I don't see how is this fact going to help if their mall in Samara has safety problems, indeed. If it doesn't, as I've told, they have their three choices.
In short: I DO think there's a problem with corruption in Russia; I just DON'T see a problem with IKEA packing its bags and leaving.