The Interlinear Bible (https://biblehub.com/interlinear/2_corinthians/2-17.htm) has the word "peddling". The YLT, which I use frequently, uses "adulterating". I think that any of those translations speak of those who would pervert God's word for profit, though the NIV calls it out more directly. The troubling thing with the NIV is that it adds the phrase "as those sent from God" that I don't see elsewhere. It's this "dynamic equivalence" that causes me to avoid the NIV. Human opinion, no matter how true, has no place in Scripture. Otherwise you can just stop reading the Bible and instead read only catechisms and confessions.

As to your point on the billions spent on "the ministry", I only see this being corrected when Christ holds our every thought captive (Col 1:15-20). Recently I coined the term "The ABCs of church - Anything But Christ". It seems that our churches will briefly mention Jesus as an important aspect of the faith, yet when you look at how they operate then it becomes clear that our Savior is more of an afterthought than the central (and only) figure. It's why I finally gave up on the institutional church. Church rules and traditions govern its operation. And lest anyone think that this is a problem with the Catholic Church only, I suggest that you think again. Protestant churches are no different. The Protestants fixed church theology with their understanding of justification by faith, yet the notion that good people go to Heaven pervades the institution today.

A number of years ago, I got caught up in believing that I was somehow responsible for my own salvation. Synergism is appealing because it allows us the same control over God that we exercise daily over own lives. Culturally, I'm taught to "pick myself up by the bootstraps" for a better life. This concept in so ingrained in our society that it is the thing by which all other things are measured. It's no wonder that the sign of a healthy church is not the proclamation of sin and our need for a Savior, but rather how much money flows into the coffers or how many talk shows the celebrity preacher has appeared on in the previous week.

What I find missing from virtually every church, including those that are most conservative like the ones that I've attended throughout my life, is their treatment of sin. I'm not talking about the "hellfire and brimstone" churches that don't preach the Gospel. What I'm talking about is churches modeled after Psalm 51 and the kingdom reign of God as found in the New Testament. Many churches are unlikely to address the reality of sin at all. Others, like my old church, have a time at the beginning of every service where the pastor addresses the need for Christ, but then quickly acknowledges that our debt was paid on the cross and then moves on to the next element of the service without a second thought. Whatever happened to David's cry to "create in me a clean heart, O God, and renew a right spirit within me" (Psalm 51:10)? Or "the sacrifices of God are a broken spirit; a broken and contrite heart, O God, you will not despise"(v17)?

Our culture has no place for the things of God, so it's no surprise when the church seeks to profit from those who come seeking something that makes them feel better about themselves. When was the last time that you heard anyone stand up to confess their sins and seek God's forgiveness? Our churches are not structured for this. To them, it's all about victory and not about confession.

These last few years especially, I am a broken man. I have no home in today's church system. As with King David, "I know my transgressions, and my sin is ever before me" (Psalm 51:7). Yet the joy of my salvation is greater than I could ever express because God has turned my unrighteousness into His perfection through the sacrifice of Christ. My prayer is that God gives us all the desire to turn away from the things of this world and to turn toward him, so that profiting from church becomes a thing of the past.