I don't know Swedish law, but I will guess that like American law, any parliament/house member can introduce basically any bill saying anything. Presumably the bill will not pass if it's terrible and the other members are sane/not-corrupt. So the presence of this bill is unfortunate, but I doubt it would get passed.
The money in politics problem has been increasing in much of the development world, so we have seen corporate interest laws pushed and often passed. The US of course is one of the worst offenders of this, and unfortunately this corporate-government system has been spreading to Europe and Scandinavia.
Fortunately for the world, the current US political circus has finally become so absurd that the global corporate right wing spread has slowed (based on elections in the last year). Maybe it will reverse once thinking populations finally realize the outcomes of the non-public-serving policies that their corrupt politicians have been pushing.
Yes this all sounds a bit dramatic, but there really aren't other adequate words to describe the direction of politics in the last 20-30 years. It really has been a problem of corporate money in politics, and it snuck up on "the people". But eventually the results begin to show, whether by excessive gun violence, increasing financial deficits (think "Kansas/Brownback"), perpetual wars, increasing first world poverty, etc. The absurdity reaches a point where it impacts enough of the comfortable people that they start caring what their politicians are actually doing, and then you start seeing big turnovers and upheavals as we're starting to see in US states now.