Internet connections still costs someone, monthly, or yearly. Electricity too. Equipment less so, but often it's leased. Bug fixes, patches, updates, scaling

Internet connections still costs someone, monthly, or yearly. Electricity too. Equipment less so, but often it's leased. Bug fixes, patches, updates, scaling. Lifetime SaaS sales don't really last. Subscriptions might change (or return less margin), but it's hard to imagine other ways.