Sure, a lot of people look online in these post paper days and many are algo driven minute by minute day traders ...
However, to answer the question asked in the article; a not insignificant capital mass of share owners and investors are older than 60 and watch stocks and trades at most day to day, more likely weekly or monthly (sans any sudden news re: MyStock!!).. and "of those people that buy a paper copy of the FT" a goodly chunk have habits that include reading through a paper and glancing at their stocks of interest (alongside tracking general financial industry news).
Probably some of these readers noticed the dupe, most would have written it off as of no importance.
However, to answer the question asked in the article; a not insignificant capital mass of share owners and investors are older than 60 and watch stocks and trades at most day to day, more likely weekly or monthly (sans any sudden news re: MyStock!!).. and "of those people that buy a paper copy of the FT" a goodly chunk have habits that include reading through a paper and glancing at their stocks of interest (alongside tracking general financial industry news).
Probably some of these readers noticed the dupe, most would have written it off as of no importance.