An interesting customer base might be small communal organisations. At our local scouts troop I had a discussion with a friend, who is also in IT. His idea (not fleshed out) was to provide small local organizations with a stack of already configured open source software to support the typical needs of such organizations (like a wordpress website, a nextcloud for file storage and common calender, limesurvey for surveys and event registration, mailman3 for mailing lists,…). Depending on the needs you could sell the initial setup process (your personal work in setting up and skill transfer) or ongoing support. Though such organizations normally don’t have much money to give away. So probably its not really worth your time financially (though probably really appreciated in the community).

Sounds as dumb of an idea as the one child policy

Which then wouldn’t be a legally full verification of your age, thus the legislation would probably require some other means. We currently have a similar discussion in the EU regarding porn sites. Verification methods could be showing your id card and your face to a webcam, or showing up at a verification office in person (at least in germany we have this with our national postal service). Of course the porn sites don’t want to implement this. And I cannot really blame them. Nobody would give a random porn site their real identity and it would still be very easy to get porn without verification.

Age verification on social media is very similar.

Even the extra budget (Sondervermögen) of 100 million € is not nearly enough to do this. Suren technically it is possible, but it would require so much money, that it is highly unlikely, that we would see the parliament in unison here. Currently the Bundeswehr cannot handle millions of conscriptions.

While the prices are surely very high, they are not that high everywhere. My sister just bought a small house with small garden in a smallish city (50k people living here) for 260k. And we are 30min train ride from the next major city