Adobe Illustrator has a 7-day free trial. You could save an image
backup before installing the software, use it to load the .ai file, save
it as some other filetype, and then restore to the image backup to
completely eradicate the software to get your drive(s) back to the exact
state they were in before rather than relying on an uninstaller which
often leaves behind file and registry remnants.
Some folks like the Corel products. CorelDraw lets you convert from .ai
to .svg; see:
https://www.coreldraw.com/en/tips/file-conversion/ai-to-svg/
According to:
https://helpx.adobe.com/illustrator/using/saving-artwork.html
you can save in five file formatts: AI, PDF, EPS, FXG, and SVG. The SVG
(Scalable Vector Graphics) format would be vector graphics which should
scale okay. What is not mentioned is if the output SVG file is one
object, or grouped objects that you could later ungroup. Inkscape
should be able to open the .svg file; however, instead of one big
object, you'll have to ungroup it to edit individual components.
LibreOffice is free, but its Draw component can open SVG files, but it
cannot ungroup.
The problem is often the conversion from .ai to .svg flattens the
graphics, and you cannot later ungroup to edit the objects or text. If
Inkscape support .ai files, you sure you want to convert to SVG?