This is a good question by slp84 member, I am sure there is good answer as well.
Most reputable TT manufacturers, like Rega or Pro Jet, are doing belt drive units, even in the most expensive models, why are they not doing direct drive TTs as well? Whats the advantage or appeal of the belt system?
At its simplest, belt drive is much easier to make. Hence the world’s biggest turntable producer, Pro-Ject has shown the benefits across dozens of models. Although they have belts, the size of the platter varies hugely, with better versions much heavier, and needing bigger or more motors.
A direct drive of quality requires sophisticated engineering and design, and with that goes necessary volume of sales.
Though I like to avoid stereotypes, historically the Japanese giants like Sony and Matsushita (inc Technics and Panasonic) made direct drive. The relatively ‘home made’ designs like Linn and Rega used belts. Of course, that is a gross oversimplification but I think it’s still germane.
Bear in mind too that belt drives offer easy isolation from motor noise. Hence a myriad of designs.
To me it’s a bit like front wheel or rear wheel drive in cars. There are pros and cons of both, but at least you have a choice.