Blogger, Medium, et.al... will these free services be around in the future after their money dries up as they find a sustainable business model for hosting your

Blogger, Medium, et.al... will these free services be around in the future after their money dries up as they find a sustainable business model for hosting your thoughts? Will you own the data you published if it's on some social network? This often shared, but I just read recently article comes to mind: https://jeffhuang.com/designed_to_last/ https://jeffhuang.com/designed_to_last/