Dude, I live in China. I’ve taken the Shanghai maglev a few times. It’s a white elephant. It only exists because it’s “face” for them to have it. It’s heavily subsidized and is still ridiculously expensive (40RMB cheapest one-way ticket, with peak price of 100 one-way).

Perhaps you should have read a bit further along in your little article here:

Despite over a century of research and development, there are only six operational maglev trains today — three in China, two in South Korea, and one in Japan.

Of these:

• The Shanghai one operates at 300km/h most of the time. It’s about 30km long.
• The Changsha one runs at 140km/h over a length of about 19km.
• The Beijing one runs at 100km/h over a distance of about 10km.
• The Linimo one runs at 100km/h over about 9km.
• The Incheon one runs at 80km/h over about 6km.

(I can’t find a reference to a second commercial maglev in South Korea, so if you find it, you can place it in that list.)

For reference, the Jinghu high-speed railway between Beijing and Shanghai operates at 350km/h cruising speed over a length of more than 1300km. And 250km/h rail lines are now common like borscht here in China.

So, yes maglev trains exist, but this does not make them economically viable. The evidence shows that most of them are slow (even by traditional rail standards, not to mention HSR), expensive, only run short distances, and in the case of the single high speed one runs only because it is heavily subsidized (despite the ludicrously overpriced tickets).

So read¹ these² and maybe³ you’ll⁴ learn⁵ something⁶.

¹ https://en.wikipedia.org/wiki/Maglev

² https://en.wikipedia.org/wiki/Shanghai_maglev_train

³ https://en.wikipedia.org/wiki/Incheon_Airport_Maglev

⁴ https://en.m.wikipedia.org/wiki/Linimo

⁵ https://en.wikipedia.org/wiki/Line_S1_(Beijing_Subway)

⁶ https://en.wikipedia.org/wiki/Changsha_Maglev_Express