Did capitalism ruin Robert Jordan's legacy?

Supposedly he'd revealed all the im****tant bits about the Wheel of Time 
storyline prior to passing on, but that could very well be just 
advertising on the part of Tor. The proven postmortem profitability of 
such things as the Tolkien and Disney estates would be sufficient 
motivation to twist the truth in that regard.

There was in fact ample time for RJ to finish the series in his 
lifetime, and he was aware that this was so. This was a popular query to 
him even in the 1990s. Yet the audience was treated to filler book after 
filler book for years on end to the point where it became a running joke 
- until it wasn't, because he actually did die.

Was the promise of polynomial perpetual profit too lucrative for RJ to 
forego compromising his artistic integrity for?

Might he have actually completed the Wheel of Time if it weren't for its 
popularity?