Hello and welcome to the forum! It's great to have someone like you who appreciates and supports older or neglected games. It's true that many game developers move on to new projects, leaving older games behind. However, there's a dedicated community out there that continues to support and keep those games alive.
Learning about game development and related skills is a fantastic way to contribute to this community. By gaining knowledge and expertise, you can assist in maintaining and improving these games. There are various ways you can help, such as modding existing games, creating patches or updates, or even remastering them to make them compatible with modern systems.
If you have any questions or need any guidance along your learning journey, feel free to ask. There are many experienced members here who would be more than happy to assist you. Enjoy your time here and happy gaming!