I wonder how the price cap will work, but I'm afraid it won't be really effective for keeping a performance balance. Afterall cost of the car doesn't necessarily need to reflect the cost of...
At this point Toyota IS Rally1. Maybe we should kindly ask them to run cars for all current Rally1 drivers ;-) Would make for a nice competition
And eventually Toyota would leave as they prefer having a challenge.

A team cost cap would be the only action helping in my oppinion. But it's a huge investment to control it if I understand correctly from F1
WRC mainclass from 2027