Thankfully, the work you have done (along with your competitors) in making headless CMS's viable not just for devs but also for content maintainers has made CMS work far more enjoyable.
It's awesome that you not only built out the dream most agency devs have, but made a successful business out of it at the same time.
Would you agree (bias aside, being a CMS provider now) that in 2025 it's probably _less_ advisable to try to build your own bespoke commercial CMS product?
It feels like the CMS market is pretty crowded now, with lots of modern, high-quality open source and commercial products.
I don't know, I feel like it's crowded with options but no options are high-quality and ready to be used commercially. Things like Strapi gets somewhat close, but then fucks up the operational parts by being complex to handle with multiple environments, bad history tracking and much else. So the space of "high quality production-ready open-source CMS" is less crowded than you think, particularly if you aim for a specific niche.
The commercial/SaaS side specifically is quite crowded now, with lots of good options for businesses of all sizes.