KTM initially listed a road racing contingency program last year and then stopped responding to all the organizations that applied for it. We followed up with them numerous times. The 3 listed were most likely the first three they approved since ever organization in the country most likely applied for it. As Rybo indicated, it's more about the budget they have and my guess is they over committed themselves this year.
As far as getting them to pay in the production class for the RC390, we don't have much control or say-so in what they do. My past experience the only manufacturer that actually has reached out to us to ask what models and classes we wanted to see get paid was Yamaha.