If you did, it would blink on Netscape, and it would be a marquee in IE, but not both (in the 90s!). Netscape had blink and IE had marquee and did not support the other[1][2], at least in the 90s.
[1] blink: "some, such as Internet Explorer, never supported the element at all" https://en.wikipedia.org/wiki/Blink_element
[2] marquee: "the first time I tried Netscape 7, in 2002. Netscape 7 and its close descendent (sic) are, as far as I can tell, the only web browsers to support both and ." https://danq.me/2020/11/11/blink-and-marquee/