Players like simple online casinos because they can jump right into games...

https://tiny-wiki.win/index.php/Why_Do_Operators_Invest_in_Usability_as_Much_as_Game_Libraries%3F

Players like simple online casinos because they can jump right into games without downloading apps thanks to browser-first play. Mobile responsive design means the site works smoothly on phones and tablets, so they enjoy their favorite games anywhere