Hi Philomath,
No, I haven’t read Fukuyama’s Political Order and Political Decay.
China is succeeding where the Soviet Union failed.
This makes sense because the first successful socialist revolution, opposed by the ‘Whites’ and invading capitalist nations, was in the Soviet Union.
Lessons, and extremely costly lessons, in both states, had to be learnt first.
Capitalist ideology holds these lessons up as proof that socialism could never work, and of its ‘evils’ (hence, to those who dare to dream, to think of and to want something better, ‘capitalism is your best – and only – option’).
But they are lessons, just as the first and second world wars (and the many other wars), the Great Depression and global warming were and are lessons – that this will always be what you must expect under capitalism, as reflections of its driving motive of profit and its unpreventable crises.

Clockwise from top: Jinwan Square, Tianjin Financial Centre and Hai River, Xikai Church, Panorama of downtown Tianjin, Tianjin Railroad Station, Tianjin Eye
The Chinese have learnt that the motive for profit, which is the basis in consciousness of capitalism, must be incorporated within socialism – i.e. on a socialist base.
Over time, it is entirely reasonable that this profit motive can be modified (i.e. re-oriented from the individual to the society – in other words better utilised for the society).
Socialism, which, even more than capitalism, can only fully function internationally, is, as can be seen in China, very much a work in progress.
As China continues to develop, the capitalist nations will be forced by economic imperative, as Engels recognised in 1894, to follow.
Best wishes, Phil