Lack of resources. In order to get access to the desired data, companies need to develop a certain infrastructure, write code, and allocate enough time and human resources (e.g., developers, system administrators).

Anti-bot systems. Most websites utilize specific anti-scraping features to avoid being crawled and scraped. Many web crawling tools available on the market are not efficient enough to deal with anti-scraping measures. In turn, individuals and businesses quickly get blocked when trying to gather data at scale.

Poor data quality. If you gather data from thousands of websites every day, it becomes harder and harder to manually check its quality. As a result, incomplete or unreliable information can end up in your data sets.