Steam already proved that.
Spotify already proved that.
The netflix of 7 years ago proved that.
Best sellers such as witcher3 that had no DRM what so ever also proved that.
It's not about long tails or any other argument, it's much simpler than that. People are willing to pay for a decent service, people are unwillingly to have extra work.
A Pirate website is never going to be more accessible than an official one always because of funding to do proper UX, so, even if all kinds of DRM were forbidden, actual legal services would always have the upper hand, and the better their service the less of a need for piracy.
When steam started getting traction, PC piracy plummeted. When spotify became available, same thing happenned for music. When each film studio didn't have its own streaming service, the piracy was falling. Witcher 3 was a best seller on PC (and this is an AAA game, not a 5$ indie) when you could just copy paste your friends installer instead of buying.
Everything is so goddam simple, provide good service, good value, and only people that don't actually have the budget to buy your stuff will pirate.
Piracy is like union strikes, yes they are annoying and bring profits down, and it's bullshit that I have to wait 5 hours for a train because of a strike. But it is a necessary mechanism of power balance.
> If people can trivially access content 'for free' they generally will do that.
"trivially" is not so simple. what about app store access in every device? from tv boxes, phone to PC. what about shared settings, data etc between them? there is no success pirate story on that, only techies that have such hobie have something compared to an actual nice setup. It's the "why dropbox" comment. Pirates can't get enough money or legal ground to build something comparable to what a legal company can build. This means it's ok if it is forbidden to block bullshit practices like DRM and remote deletion, if you actually care for the customers, no pirate app/website can compete with you.