There are many reasons for this. Candida Sisam, captures one these reasons succinctly:
“A hybrid model can seem like an easy solution to the current issues companies face because they can retain their office space while also accommodating both those who prefer in-person and those who prefer remote work. The easiest solution is not necessarily the best and it’s imperative to establish best practices for communication around it early on. I believe an important aspect of implementing a hybrid model is considering where leadership spends their time. If leaders are predominantly working from the office, other people will also likely want to work from the office – unintentionally creating a culture of office-first culture if it did not already exist. An unbalanced culture could create challenges when it comes to recognising people, as in-office employees could attract more attention and remote workers could feel excluded.”
I maintain that it is easier to manage a fully remote team than it is to manage teams that are essentially split across two communication “apps” – the office and the digital app those use not in the office.