Product doesn't have to cater to every single place on earth to be viable. It's like arguing that ARPAnet was a terrible product because not everyone had T1 lines.
200mb uncapped internet in the UK is super common and pretty cheap (£30-£35 a month), as it is in most of western Europe.
I know this is an america-centric website but please don't apply your standards to us, its terrifying.
This isn't accurate coming from someone living in London. Most of my co-workers do not have access to "200mb" internet and most common is 25mb or less. I personally only get 18Mb on my home connection, i.e. roughly 2MB/sec and this was the best I could get from any provider.
The state of Internet infrastructure is fucking terrible in the UK given how small a country it is. Coming from California to the UK felt like going back in time in terms of Internet speeds.
If you can stream video at decent quality, you have the bandwidth for Stadia.
Figure 2: "30 Mbps coverage in all Member States in 2011 and in 2017" https://op.europa.eu/webpub/eca/special-reports/broadband-12...
(+) only slightly exaggerating
Germany is pretty bad when it comes to internet speeds. Broken market.
I assume France is in the developed world as of 2020 and I believe I've more luck wrt Internet than most people here.