Really what it boils down to is you are completely outmatched on the sales and marketing side. The decision makers have already worked with the sales exec and that relationship has been cultivated over countless steak dinners, expensive bottles of wine, and boondoggles disguised as "technical education."
And given they already have the tentacles in these organizations, all they need to do is turn the knob to zero for their <insert_shitty_complimentary_product> and practically give it to your potential customer for free. Now the CIO looks like a real winner to the CFO/CEO, the relationship moves forward, maintenance contracts get renewed, and the back slapping continues.
One of my current clients was trying to onboard one of their industry specific solutions that was only available through a channel/partner engagement. Decided to add SFMC into the mix but it was out of scope for the partner so she sent me the documentation. A 400 page PDF of absolute garbage which was impossible to implement because it was filled with references to missing information, deprecated or removed features, and bizarre directives to do things that weren’t even sensible or possible. Ended up scrapping the entire project after four months and six digits in billables to Salesforce and the partner with nothing to show for it.