The direct drive trainers of later years are much much better than earlier trainers. The 2018 kickr for instance is much more smooth and silent than earlier models. So you may be comparing an obsolete $ trainer with a $$$ peloton bike.
It seems unfair to impugn the peloton bike as being "$$$" where a direct drive trainer is only "$" when the price difference is far from an order of magnitude, especially when you consider that you still need an entire bike to use with the direct-drive trainer.
Granted, the direct drive trainers and related software have functionality the Peloton does not have, particularly the pre-Bike+ peloton.