"may be interested" is a perfectly acceptable and commonly used phrase in written English. It is used when there is a possibility that someone would be interested in something. For example: "People looking for a great summer job may be interested in the positions we are currently offering.".
Some developing countries, though, may be interested.
Even if not, somebody may be interested.
Gamblers may be interested in the technology.
They may be interested in Tampa Bay center Chris Gratton.
Hopefully readers may be interested in another John Pye.
Robert Mueller may be interested in the answer.
Krogstad, in turn, may be interested in Nora.
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.
Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com