The fundamental problem is that in our fully networked era software cannot _not_ be maintained. Security issues are inevitable, cloud/sync/store systems require servers, upstream APIs, libraries & operating systems are constantly shifting and breaking things.
So OSS aside (which has its own complicated economics) someone needs an ongoing revenue stream for that work to happen. Whether it's through regular release of paid upgrades (and EOL of old ones) or a subscription model is these days less of a fundamental separation and more of a question of cadence.
Take a look at the much-vaunted Campfire from once.com - there's been zero new features since initial release and I'll bet the cost of a copy come Feb next year when it's a year old there'll be a 2.0 for another $300. How long after that will 1.0 be EOL'd? So are you really 'buying once' for $300 or paying $300 a year just with the auto-renew turned off?
So OSS aside (which has its own complicated economics) someone needs an ongoing revenue stream for that work to happen. Whether it's through regular release of paid upgrades (and EOL of old ones) or a subscription model is these days less of a fundamental separation and more of a question of cadence.
Take a look at the much-vaunted Campfire from once.com - there's been zero new features since initial release and I'll bet the cost of a copy come Feb next year when it's a year old there'll be a 2.0 for another $300. How long after that will 1.0 be EOL'd? So are you really 'buying once' for $300 or paying $300 a year just with the auto-renew turned off?