More money would be an interesting experiment in this context, but unless the judges are unbiased and unaffected by the crowd reaction, which unless its composition is only of people who are well versed in the consumption of those types of routines, I do think the added money could potentionally incentivise people to "play safe" and stray less from proven concepts.
I don't think money would change how people made their routines. Judges area already biased, and crowds are already biased, so DJs who are going to pander to what they think will be popular are already doing that. See just about any Thre3style set using a ton of toneplay and purely tried and true club bangers for examples of that.
More money would just make more DJs able to justify putting the time it takes to make a great routine and giving up other opportunities/money along the way. It takes so much time/effort to put together routines, and unless you win world titles, the returns are very minimal.