I'd be very surprised if this took 5 FTE years, I'd assume way more. Especially including all the non-devs necessary (designers, managers, etc.).

Honestly I was thinking more like 18-24 months total (for a team of 5). 1 UI designer, 1 UX designer, 3 React devs.

But let's say 5 people working 12 months x 50,000 USD = 250,000 USD.

Even considering non US payrolls at 50k per year, that's a significant expense.

Why are you multiplying yearly salaries with months? :)

JetBrains devs likely cost around 100k/y year here in CEE by the way. But I think 3M is a reasonable guess, 30 FTE years (7 devs, 1 PM, 1 UX, 1 "overhead" (other management costs)).

Jesus you're right... I'm such an idiot.

He didn't multiply it with months, otherwise the equation wouldn't result in 250k.

He means:

(5 people working for 12 months) x (50000 per person/year) = 250k

I don't know US market. How common is it to get 50k a month as a React dev or UX/UI designer across the USA? Or do you mean Silicon Valley only?

I don't know the US market that much... but here in Mexico that's what a decent dev makes when working for a US company.

I would imagine a good React dev in the US would make (on average) closer to 100k? SV salaries will probably be higher than 100k, no?

That's pretty low, I'd expect twice that at least.

50k per month (600k per year) is an extraordinarily high salary even in the US. I assume the parent poster meant 50k per month for the team of 5, so each dev is getting 10k per month/120k per year.

I meant 50k per year per person

I think it's more likely this grew from a single developer who knew what he's doing, to a small team, organically over time as they expanded.

The competitive advantage is that it's bespoke and designed exactly for their own needs. It also provides a look+feel that is distinct from the typical Material UI fork, which could be considered a savvy move.

Literally every company I have worked for builds a component UI library. They are boring and catered specifically to the company's branding and needs.

They also grow with every feature iteration. It starts with `<Text />` and `<Button />` and then grows to include `<Toast />`, forms, modals, etc.

If the company is big enough they can make it public and get some attention but I don't see why anyone would use them for their own personal projects outside of the very limited scope of the company itself.

Sure, but at this level of polish?

I don't know but I don't think many companies can afford to do this.