If it's political parties you're thinking of (OK, it probably isn't), then you would be right.
Here is a record of the presence of commitments to economic interventionism in party programmes since the Second World War in western democracies:
After the war, socialist parties pushed for significant government intervention in the economy, whilst christian democratic and conservative parties resisted this. Over time, the socialists gradually adapted their position to the extent that on this key political dividing line there is now almost no distance between the main parties of the left and right. We (Mark Blyth, Riccardo Pelizzo and I) call it a cartel.
Any wonder voters are increasingly turning to extremist parties?