Except busses and airplane flights tend to be much cheaper than train tickets there (excluding subways/local trains). If trains were so efficient that would likely be shown in the pricing.

While in Spain for several months it was only economical for me to take a train a single time. It was several times more expensive than the alternatives in every other case. This left me either flying or bussing.

In Stockholm it's actually cheaper to take a bus to the airport than the train, and that's just local travel.

because trains pylay for railways but busses dont pay for the road

That's not necessarily true. Fuel taxes and registration pay for road construction and most railway construction is heavily subsidized by governments.