Well, Democracies fall to the tyranny of mob rule and Republics collapse over the inaction caused by factionalism.

Will it happen in current world that is for the future

Machiavelli warns us on the nature of republics:

"*From proceedings such as these, arise at once the attachment for and influence of parties; bad men follow them through ambition and avarice, and necessity compels the good to pursue the same course. And most lamentable is it to observe how the leaders and movers of parties sanctify their base designs with words that are all piety and virtue; they have the name of liberty constantly in their mouths, though their actions prove them her greatest enemies. The reward which they desire from victory is not the glory of having given liberty to the city, but the satisfaction of having vanquished others, and of making themselves rulers; and to attain their end, there is nothing too unjust, too cruel, too avaricious for them to attempt. Thus laws and ordinances, peace, wars, and treaties are adopted and pursued, not for the public good, not for the common glory of the state, but for the convenience or advantage of a few individuals."

"It was generally supposed that no further occasion of quarrel or of party animosity could arise, since those whose pride and insupportable ambition had been regarded as the causes of them were depressed; however, experience proves how liable human judgment is to error, and what false impressions men imbibe, even in regard to the things that most intimately concern them; for we find the pride and ambition of the nobility are not extinct, but only transferred from them to the people who at this moment, according to the usual practice of ambitious men, are endeavoring to render themselves masters of the republic; and knowing they have no chance of success but what is offered by discord, they have again divided the city. It seems almost necessarily ordained, in order that in human affairs there may be nothing either settled or permanent, that in all republics there are what may be called fatal families, born for the ruin of their country. Of this kind of pest our city has produced a more copious brood than any other; for not one but many have disturbed and harassed her."