Ownership Rights: The rights to re-release an album or specific songs might be tied up in contracts or ownership agreements between Barry Manilow, the record label, and other parties involved in the music's production.

Artistic Choices: Artists often have specific reasons for not re-releasing certain material. It could be that Manilow or his team have chosen to focus on promoting new work rather than re-releasing older albums.

McDonald's Menu UK Prices: Record labels and artists often consider market demand and trends when deciding which albums or songs to re-release. If there isn't enough perceived demand, they might prioritize other projects.