Alas the same thing was said 15 years ago too that the gap will start decreasing slowly but we know how it turned out.
Looking at the procurement levels and induction speed the gap for the coming years will be increasing not decreasing.
Chinese economy has reached that saturation point from that it can't go any further.
it can't continue many things like, can't deliberately devaluate renminbi, can't build more ghost towns, can't maintain more inventory, can't continue dumping etc. it's demography will also give decreased dividend (in the future). it also failed to receive market status.
those days of cheap alternatives has reached it's zenith and can't progress any further. Ping Pong knows it very well and that's why he was talking about transforming Chinese economy to manufacturer of quality products instead of cheap alternatives. but China is nowhere to match the quality of branded items. (except Wuhan virus).
they tried to overcome this logjam by BRI. it's only intention is to suck those economies dry. little bit ott : show one country which is benefited economically by allying with China.
but the world has noticed that and some countries like US has started responding.
this BRI is the only option by which China can maintain it's momentum.
when anybody can't go any higher, he tries to drag the people above him to show his relative height is higher. China has done exactly that by releasing Wuhan virus. economy is it's main target. but as a result, I think many countries will decouple their economies (to some extent if not completely) from China. That will accelerate it's fall.
China has created a economic bubble around itself. it should burst in no time.
and they know that.
condition of India is just opposite to China.
so in short term that gap might increase a bit, but in the long run it's bound to decrease.
(not touching other points atm as economy will dictate all of those).