That's a good point. It's definitely not as hands-off as buying shares in an index fund, or paying a property management company to manage a rental property.
I do have to be on call in case someone calls or opens a support ticket, or if there is a problem with the servers. But all the technical and billing stuff is automated. And if I want to have a long vacation then I make the conscious choice to neglect marketing and sales. But the next step would be to find some virtual assistants who can help with support and marketing.
If you have customers, employees, contracts, websites, marketing, invoices, etc, then there is involvement. Meaning it’s not so passive.
;)