We already have a mechanism to prevent such meddling - a constitution. The authority of the government should be confined to the small box required to maintain liberal order. Limiting power is the best way to minimize corruption. The power of the government being allowed to grow without limit is what led to that power becoming susceptible to capture.
This was successful for centuries, but the constitutional protections of this order eventually eroded. Were they stronger and more explicit (say there was no general welfare clause), we could well be living in such a liberal order today.
I guess we're just ignoring the Robber Barons and the monumental effort to reign in their power through trust busting. It would be nice to live in your fantasy world but we don't. Plutocratic power must be checked by government. The alternative is monopoly and collapse. We have reams of evidence discrediting your view.
This was successful for centuries, but the constitutional protections of this order eventually eroded. Were they stronger and more explicit (say there was no general welfare clause), we could well be living in such a liberal order today.