We are talking about companies set in Korea, they are quite known for being very predatory with their contracts. It's very well discussed in the K-pop industry but it's not going to stop future generations from pursuing a dream. Usually in K-pop you start with a debt, you owe the company money until you can break even with the money they spend on your debut.
With webcomics I assume it's the same thing but in the opposite order.
The sad reality is, webcomics are still new to the international majority even if you discovered webcomics back in 2014 they've been around in Korea much longer. There are industries dedicated to creating webcomics and people outside of Korea are competing to get that five second fame.
Korean companies are notorious for exploiting Thai, Filipinos, Chinese, Japanese people, that's why K-drama/K-pop was so popular. It wasn't until 2016 when other countries who weren't the targeted demographics became the targeted demographics. I mean, no shame to Brazilians who has always been interested in Asians. They are one of the saddest bunch, cause human trafficking in Korea is a thing.
I digress. Now that you know, Korea is just being Korea at least until the public here actually do something about it. But that probably won't happen since there's people who encourages you to make your own site to host your comics and then there's those who advertises that they are a indie comic hosting website (with even smaller readership base). The Internet can only be spread so thin, guys. The issue can't and won't be resolved unless every artists and writers on the internet come together to make a choice. Nothing will change in the contracts because Korea is not going to change their ways any time soon.
Edit: Also, Webtoons is millions of dollars in debt right now, I wouldn't be surprised if Tapas is already on the red too. That's when companies take desperate measures, they kick people until the place burn down. Though Korean companies do have the tendency to keep going even when their gut is telling them to stop. It's just sad honestly. It's about public image... I suppose.