Yep, single tickets on Austrian ÖBB is not cheap at all without subscriptions or discounts.
Prices are good only if you use it regularly as a commuter via a yearly subscription (Klimaticket), but for one off trips, prices are more expensive than flying.
That is the point! Austria is on the verge of overtourism, it's a conscious political decision in this case to tax transport of tourists highly and allow the population cheap subscription plans.
