I think basecamp is working on this kind of technology, but I think it is somewhat common for some performance focused shops to pre-render their initial HTML and cache it in their load balancer.
Basecamp I think is taking it a step further.. read more here: https://hotwired.dev/
They are using AMD's latest polaris generation GPU's which are $/perf/W on par with Nvidia, just don't have any super-high end offerings (GTX 1070 and GTX 1080 are unrivaled)
I would imagine that intrinsically the costs of buying/renting an X number of CPU cores and Y gigs of RAM just has a certain cost and therefore the price of VPS's just have to be at a certain minimum level. I guess Scaleway is just closer to that edge, but being about twice as cheap as DO (which is quite big and popular) just makes me question the long-term viability of these prices.