IMHO Liberalism was manufactured by Capitalism as a left-sounding form of politics to allow mainstream parties which were genuinelly leftwing to move Right in Economic, Quality Of Life and even broad Equality whislt still appearing to be left-wing due to their pro-liberty posture on Moral and Social subjects.
I say this because I have yet to see any form of Liberalism in mainstream politics, ever, anywhere, which sought to maximize people’s freedom to access limitied or constrained resources which are required merelly to live, such as Land (which Land Ownership goes against), so I don’t think that at least in Politics there was ever any genuine Liberalism for Capitalism to corrupt.