That hasn't happened at all for long distance routes, and it was sheer marketing guff by Boeing's 787 sales team some years ago to claim so. In fact carriers still are consolidating to routes from their hub only.
The Boeing 787 has been used by and large to replace existing aircraft, either end-of-life 767s or, in a notable number of instances, 777s that were proving too large for the route. And they pretty much all operate spokes out of their owner's hub.
The B767 was also used to by-pass hubs, spectacularly by American who built a huge European network. Then along came the Alliances....
#mostlygonenow
so there are some hub activities by smaller players but essentially improvements to "maintain lhr's position as a hub" perhaps will disproportionately favour one airline.
There's a fair amount of connectivity among STAR at LHR as well, be honest.