Well yes. Precisely because the government was "doing nothing" while issues that plagued the voting population like migration, wealth disparity and affordability crisis were constantly growing for the past ~15 years until it reached breaking point.
Hence why people affected by this are now voting to give the new extremist parties a chance at the helm, because just voting more "doing nothing" by the parties who stood by and enabled this, just guarantees the same issues aggravating. So then what else do you expect to happen at the elections?
A lot of voters disliked the effects migration had on their country, being also one of the reason why they voted for Brexit, and why the vote far right parties right now.
And how is Berlin planning to seize the wealth of billionaires?
Because I've seen this play out before, where every supposed promise to tax the billionaires, just ends up as another tax burden on the working class high earners and entrepreneurs who already pay the highest tax rates and are the furthest thing possible from billionaires, but still gets political support from the unwashed masses since it's entirely envy driven.