I first used email in the mid-80s, and was using it daily by 1990. Meanwhile, I practically got fired from a summer internship because I kept trying to encourage people at the office I was in to use email. The owner one day angrily called me in and told me in no uncertain terms "son, this ain't the Jetsons. The fax machine will never be replaced by email, period, the end."

All the data proved him right for almost another decade. Fax machines actually had their biggest year ever in 1997 -- folks the internet was in full swing, and yet that's the year the USA made its single largest investment ever in fax machine hardware.

https://i.imgur.com/c3RE06S.png

If you made major investments in fax technology or bought stock in fax machine companies in 1998 based on what was a very clear and strong trend, you were gonna be in for a bad time.

OTOH if you are an early adopter is it easy to get discouraged by how very long it can take for regular people to catch up to technological advance

TLDR keep building and keep adopting