Re: 30 years on - Same stench as the Acorn BBC Computer
The thing the BBC really produced was a common platform effect - nearly everyone had access to one, which magnified the effect of any software or other educational material produced for one immeasurably.
Sir Clive was really just lamenting that without the big fat government educational subsidy what was left over was the gaming niche - which the ZX Spectrum had to share with the Beeb, the Electron, and the C64.
The Archimedes didn't do nearly as well in terms of available educational software packages, because it wasn't nearly so available, and a more fragmented platform, and was competing with the PC at the time.
What we already have, as you identify, these days, is a common platform - the browser. And kids today are far more likely to have access to a laptop than a Pi and a spare monitor / keyboard / mouse.
Throwing hardware at the problem isn't the solution. Back then, hardware was scarce. We have a surfeit of it these days. What we need is better software, that can actually compete with the endless stream of video and "free" games for the spare time of our youth.