Streaming/Linear?

Why I don't understand with all these traditional companies that are launching streaming services now is with exclusive original content on their streaming services? What do they prioritise? Won't it affect their linear channels with original content in a huge way? I know linear is on the way out but aren't they effectively killing them now? What will Comcast/WarnerMedia/ITV/BBC decide goes on their streaming services and on their linear channels? What's going to be the difference between the linear channel content and the content for their streaming services? Surely the linear channels are going to get the leftovers with the better stuff going on streaming? Like Disney+ is basically Disney for the streaming world. What new content goes on ABC/Disney/Freeform now?

Traditional TV isn't completely dead but the trend is for online and streaming content.
Previously "original" content for online used to be so-called "webisodes" of TV shows or the "behind the scenes" stuff that you'd often find on DVD.

I think it will be a long time before everything premiers online and that's it. 24/7 TV schedules don't fill themselves.

I personally don't understand the BBC & ITV's desire to have its own Netflix. Everything I've seen so far suggests the real money to be made is in production, and this was clearly ITV's strategy for some time. Britbox seems to go against this.

The BBC presumably want to compete with Netflix and Amazon's 'long tail' - and make content available for longer, in return for a subscription that covers their costs (with any 'profit' going back to subsidise the licence-fee funded service).

There is a Public Service argument for allowing viewers to watch archived shows for a cost-covering fee (which aren't free for the BBC to make available)

Apparently, there are some advantages the streaming originals can take.
An entire series (or "season" in American terms) can be released at once, so the makers don't have to worry about weekly audience numbers.
Compared to those shown on linear channels, streaming originals don't have to worry about running time. (Some recent shows even have longer opening title and closing credits.)

All these advantages lead makers to concentrate on quality.

Can they not just do that by selling the rights to Netflix/Amazon, making money on content without the overheads involved in streaming it themselves?

And save the licence fee payer an extra subscription.

I can see the appeal of Britbox abroad but not so much here. I already subscribe to three services and in reality have Netflix and Now TV for one service a year and Amazon as it's free with prime. Personally I feel like there is actually too much content on Netflix especially- feel like I'm paying for a load of content I'd never possibly have time to watch.