Other nations were way ahead, like Japan.
But specifically to the UK, the BBC was the fundamental force in developing the needed infrastructure, tech, broadcasting and filming methods in bringing HD TV, especially paywall-free HD, to the nation.
Likewise, the same with DAB and bringing that to the UK.
And if you ever read their R&D website/blog, you'll see the BBC still has a massive hand in the development of tech across all platforms (tv, radio, web etc).
I appreciate this is GD not SC but that is an opinion rather than fact; there's plenty of people that see value in the BBC and can also see that it offers much more than mere TV.
Personally, in the same way i'm happy to pay towards a users kid(s) get an education or help someone here with their benefits (through taxation), i have no issue paying for a public service knowing that services like the World Service, education resources and news/journalism helps others here in the UK as well as abroad, especially in lesser privileged nations, regardless of what i directly receive, consume or benefit.
I think this "I'm alright jack", race to the bottom approach that some are displaying in wanting to remove a public service is sad and IMO, i feel it'll ultimately propel us closer to "setups" used in other countries like the USA.