It depends, do you have the time to maintain few things, or sometimes more than “few things”? Do you have the skills or at least willing to learn? Are you willing to deal with some basic contingency planning in case some stuff goes wrong? What kind of services are you replacing, if emails, probably not worth it, storage? Definitely. Do you have a reliable internet/power combo to rely on accessing your lab remotely? Say you are traveling and want to access your NAS to get a copy of XYZ document, last thing you want is that you are unable to do so because your power is down.

So it really depends on the use case and many factors, if it works for you, great, otherwise and you are willing to pay some subscriptions, then be it.