This was part of their statement- “Following overwhelming feedback from the clubs, the decision to bring an end to the 2019-20 season was made in the best interest of the women’s game. This will also enable clubs, the FA Women’s Super League & Women’s Championship Board and the FA to plan, prepare and focus on next season when football returns for the 2020-21 campaign.
Supporting the welfare of the clubs and players will continue to be our primary concern throughout this process, which also involved a robust and thorough examination of the logistical, operational and financial challenges that the game currently faces.”
Undoubtedly money played a big role but I think it was more that they looked at the financial loss of discontinuing vs the financial cost + safety risk to players/staff of continuing. Unlike the prem (which is separate from the FA) it doesn’t make the big bucks and so, I think, player safety is more of a concern but also disinterest in the logistical nightmare that continuing encompasses.