no

Then be ready to say goodbye to those 25%-90% off sales.

The EULA (that YOU agreed to) states you have a NON-TRANSFERABLE license.
This means no trading or selling.

Sure why not

引用自 HikariLight：

Then be ready to say goodbye to those 25%-90% off sales.

The Sales would not vanish.....but the Publishers would.
So it would be more a say goodbye to the majority of games.

Always remember that not getting your way does not equal to a company not taking care of its customers.

like give you $1.50 for a $40 game...

引用自 Wolfpig：

The Sales would not vanish.....but the Publishers would.
So it would be more a say goodbye to the majority of games.

No, the ones suffering the most would be small indie developers. Who can weather more? A multi-billion dollar heavy publisher or a small developer who depends on EVERY sale?

Aaand... What it's in for developers and Steam to have a secondary store competing with their own products inside the Steam Store?

引用自 HikariLight：

Then be ready to say goodbye to those 25%-90% off sales.

It'd change just more than sales.

If you were the owner of a physical store, would you let people take stuff from your shelves and sell them for their own profit? That's what the OP is demanding. How did "customer" change from "person who buys stuff" to "person who expects to make a profit at a store's expense"?

Your idea will completely destroy Steam.
It won't work. It won't happen.

You purchased a non-transferable license. There is nothing to sell. If you could transfer the licenses in exchange for a price, the only way the publishers would agree to such a thing is if the entire proceeds of any such sale went to them.

Valve do not own the IP to the majority of games on Steam.

You licence those 3rd party games, you do not own them.

An example of a game from your library.

City Skylines II EULA:

https://psteamproxy.yuanyoumao.com/eula/949230_eula_1

1. License

The Services are licensed or otherwise made available to you, not sold. Paradox or its licensors own and reserve all rights to the Services, including all rights, title, and interest in the intellectual property rights.

引用自 GELSE⭐：

This is long overdue, Valve!

Not happening.

引用自 HikariLight：

Then be ready to say goodbye to those 25%-90% off sales.

Not just that; publishers would stop using Steam. It would be suicide.

引用自 Tolkien Book Fan：

If you were the owner of a physical store, would you let people take stuff from your shelves and sell them for their own profit?

Not the correct analogy. You CAN buy something from a store, and sell it to someone else later.

引用自 Wolfpig：

引用自 HikariLight：

Then be ready to say goodbye to those 25%-90% off sales.

The Sales would not vanish.....but the Publishers would.
So it would be more a say goodbye to the majority of games.

or publishers can focus on not ripping people off with 90 dollar games lol

引用自 John Henry Eden：

引用自 Wolfpig：

The Sales would not vanish.....but the Publishers would.
So it would be more a say goodbye to the majority of games.

or publishers can focus on not ripping people off with 90 dollar games lol

You don't have to buy those games on launch day. It's a choice. You can wait for a sale or buy cheaper games.