A combination of factors drove the worst quarter ever for big tech growth, though the secular shift online of the economy and society will continue.

Advertising demand is down, reflected in lower prices. Ads did better the closer they are to transactions, with variability by category.

Efficiencies and AI are the investor-soothing buzzwords going into 2023.

In response to COVID-19 and the associated lockdown and economic crash, advertisers have slashed budgets. Online budgets are not immune.

This has clarified features of the online ad market: it is demand-driven, relies heavily on SMEs and startups, and is built on direct response campaigns.

We expect online advertising to outperform other media, and for platforms to further gain share. But with a very few exceptions, this health and economic disaster is good for nobody.

Expenditure on UK classifieds peaked in 2004, but has since almost halved to £1.95 billion in 2018. In every vertical, the print to digital transition of expenditure has favoured a first mover, leading to dominant positions that challengers find hard to disrupt.

The property market was stagnant in 2019, with stable house price growth but low transaction volumes as Brexit uncertainty held back sales. An expected cut in interest rates this year should contribute to a slight rise in transaction volumes.

The low tide of transactions has cemented the reign of Rightmove and condemned challengers to low traction. No. 2 player, Zoopla, plans for a major drive in 2020 after a 1.5-year investment spree by parent private equity firm Silver Lake Partners.