Before COVID, the B777 was a better proposition for most airlines then the A380, now major operators of the B777 have largely grounded them in favour of smaller types. SQ and CX are becoming narrow body operators through merging Silk Air and Cathay Dragon into mainline.
With the likely availability of large numbers of relatively new B777s at depressed prices on the second hand market over the next few years, the option of acquiring a newer more efficient aircraft type with a much longer projected time in service could prove attractive when compared to spending less money to bring back an already deprecated aircraft which is more expensive to operate and will likely only remain with the company for a few years. The requirement for large premium cabins is well down the list of what’s needed.
In the short to medium term, I can see narrow bodies flying to the limit of their range, B787s and A330s for longer distances with B777 and A350 on routes which can support them.
With the number of grounded aircraft, the newer more efficient ones will be most of the work.