Price hiking old games because they now include the "Series X" compatibility logo

I haven't seen any price hikes myself, so not sure about that.

Smart Delivery means you buy a game for Xbox One and you get a free upgrade to the Series X version. It's similar to when the One was released and some 360 games offered upgrades to the One version. The main differences at that time was that a lot of developers
charged for an upgrade and for some of them you only got an upgrade if you bought digital. This time you can get the upgrade even if you buy it on disc.

it would be good if XCloud did include all the old games. maybe the team that handles backwards compatibility will add old titles to the XCloud library when they finish their work getting old games to work on the new Series X Console

There is no xbox one series x

The series consoles are a completely separate from.xbox one

You just Confuse people by saying it

Ita xbox series s /x thats it

When talking about system requirements

Xbox one games work with xbox one games there is no requires xbox one s or x

It's just xbox one

Now with series games physical games are only compatible with series x

This does not include xbox one x or s

Digital games are compatible with series s or x but must be stored on nvme storage card or internal drive

Keep in mind you need a series x or s to play ir

Xbox one's arent compatible since they are over 10 years old and this include xbox one x

When xbox one games are made thwy just say xbox one not s or x

However for next gen games it's series s or x or both for digital releases only

You were given an interest free loan when you purchased your Xbox hardware, and it was sold to you for up to an including several hundred dollars under its cost of manufacture. Part of this agreement is that you would pay for subscriptions and shop at the Xbox store.

Had you bought a Series X equivalent PC on launch day, it would have cost you about $1200

The price of making it has likely only gone up, hence the price hikes.